Anti-interference device and method of optical parametric oscillation unit and quantum computing system

Abstract

The application relates to an anti-interference device and method of an optical parametric oscillation unit and a quantum computing system. The device comprises an optical parametric oscillation module, a differential phase detection module and an adaptive compensation module. The optical parametric oscillation module comprises two degenerate optical parametric oscillators with a phase difference of pi, which are configured to receive a driving signal with a preset phase difference to respectively output a first oscillation signal and a second oscillation signal with common-mode interference characteristics. The differential phase detection module is configured to obtain a differential phase signal between the two degenerate optical parametric oscillators based on the first oscillation signal and the second oscillation signal. The adaptive compensation module is configured to generate a control signal based on the deviation of the differential phase signal from a target phase, and drive a phase adjustment actuator to adjust the phases of the two degenerate optical parametric devices. The application actively suppresses environmental interference at the hardware level, eliminates common-mode noise and corrects differential-mode residuals in real time, avoids data loss, and improves the signal-to-noise ratio and system stability.

Description

Technical Field

[0001] This invention relates to the field of optical quantum technology, and in particular to an anti-interference device, method, and quantum computing system for an optical parametric oscillation unit. Background Technology

[0002] In quantum optical computing systems such as the Coherent Ising Machine (CIM), the spin state of the degenerate optical parametric oscillator (DOPO) is typically encoded in the phase of the optical pulse. However, during actual operation, factors such as ambient temperature drift, mechanical vibration, and changes in fiber polarization state can cause variations in the optical cavity length or optical path, leading to phase drift. When the phase drift exceeds a certain threshold, the error rate in discriminating the spin state increases significantly.

[0003] In related technologies, a software post-selection scheme is typically used to address this problem. This involves checking phase stability after the system has run and discarding unstable data. However, this passive selection scheme has significant drawbacks: firstly, the typical data discard rate is as high as 20% to 40%, resulting in a significant waste of computational resources; secondly, this scheme cannot correct interference in real time, and in cases of slow drift, it may lead to the discarding of entire data segments, severely impacting the system's computational efficiency and usability.

[0004] The problem of phase drift in the spin state of degenerate optical parametric oscillators due to environmental interference in related technologies has not yet been addressed with an effective solution. Summary of the Invention

[0005] The present invention provides an anti-interference device, method, and quantum computing system for an optical parametric oscillator unit, which at least solves the problem of phase drift of the spin state of degenerate optical parametric oscillators caused by environmental interference in related technologies.

[0006] According to a first aspect of the present invention, an anti-interference device for an optical parametric oscillation unit is provided, comprising: Optical parametric oscillation module, including two phase differences of Two degenerate optical parametric oscillators are configured to receive a drive signal with a preset phase difference, so as to output a first oscillation signal and a second oscillation signal with common-mode interference characteristics, respectively. The differential phase detection module is configured to acquire the differential phase signal between the two degenerate optical parametric oscillators based on the first oscillation signal and the second oscillation signal. The adaptive compensation module is configured to generate a control signal based on the deviation between the differential phase signal and the target phase, and drive the phase adjustment actuator to adjust the phase of the two degenerate optical parametric oscillators.

[0007] In some embodiments, the differential phase detection module includes: The interference detection submodule is configured to perform interference processing on the first oscillation signal and the second oscillation signal to obtain the differential phase signal and differential amplitude signal between the two degenerate optical parametric oscillators; The state discrimination submodule is configured to determine the spin state of the optical parametric oscillation module based on the polarity of the differential amplitude signal.

[0008] In some embodiments, the interferometric detection submodule includes a balanced detector for measuring the phase difference between the outputs of the two degenerate optical parametric oscillators and outputting it as a differential phase signal of the two degenerate optical parametric oscillators.

[0009] In some embodiments, the state discrimination submodule is configured as follows: When the differential amplitude signal is greater than zero, the spin state of the optical parametric oscillation module is determined to be the first spin state; When the differential amplitude signal is less than zero, the spin state of the optical parametric oscillation module is determined to be the second spin state.

[0010] In some embodiments, the adaptive compensation module includes: The error calculation submodule is configured to calculate the phase deviation between the differential phase signal and the target phase; The execution drive submodule is configured to generate the control signal based on the phase deviation to drive the phase adjustment actuator to adjust the cavity length or refractive index of the two degenerate optical parametric oscillators.

[0011] In some embodiments, the phase adjustment actuator includes at least one of a thermo-optic phase shifter, an electro-optic phase shifter, or a piezoelectric phase shifter; The adaptive compensation module is further configured to determine a phase-locked state when the phase deviation is less than a preset threshold within a continuous preset number of periods.

[0012] In some embodiments, the phase adjustment actuator includes a piezoelectric phase shifter; The adaptive compensation module is further configured to: lock the phase difference between the outputs of the two degenerate optical parametric oscillators based on PID feedback control of the piezoelectric phase shifter. .

[0013] In some embodiments, the apparatus further includes a drive allocation module, the drive allocation module comprising: Shared drive signal source, configured to output initial drive signal; A beam splitter is configured to split the initial drive signal into a first drive signal and a second drive signal; A phase delay line is disposed on the first driving signal or the second driving signal and configured to introduce the preset phase difference to form the driving signal.

[0014] In some embodiments, the two degenerate optical parametric oscillators are microcavity structures, and the center-to-center distance between the two microcavity structures is less than or equal to 100 μm; and / or, The common-mode rejection ratio of the two degenerate optical parametric oscillators is greater than 40 dB.

[0015] According to a second aspect of the present invention, an anti-interference method for a differential optical parametric oscillator unit is provided, comprising: A drive signal with a preset phase difference is injected into two structurally symmetrical degenerate optical parametric oscillators to obtain a first oscillation signal and a second oscillation signal. Based on the first oscillation signal and the second oscillation signal, the differential phase signal and the differential amplitude signal are obtained; Based on the polarity of the differential amplitude signal, the spin state of the optical parametric oscillation module is determined; The phases of the two degenerate optical parametric oscillators are adjusted based on the phase difference between the differential phase signal and the target phase.

[0016] In some embodiments, adjusting the phases of the two degenerate optical parametric oscillators based on the phase deviation between the differential phase signal and the target phase includes: A proportional-integral-derivative (PID) control algorithm is used to generate an adjustment signal based on the phase deviation. Based on the adjustment signal, the phase adjustment actuator is driven to change the cavity length or refractive index of the two degenerate optical parametric oscillators.

[0017] According to a third aspect of the present invention, a quantum computing system is provided, comprising: An anti-interference device array, the anti-interference device array comprising anti-interference devices; A control network is configured to distribute drive signals to the anti-interference device array and collect the spin states output by each of the anti-interference devices.

[0018] This invention provides an anti-interference device, method, and quantum computing system for an optical parametric oscillator (OPO) unit. By constructing an OPO module comprising two degenerate OPOs with a phase difference of π, and utilizing structural symmetry and a reverse pumping mechanism, environmental interference (such as temperature drift and mechanical vibration) generates identical common-mode phase disturbances on both oscillators. Based on this, a differential phase detection module acquires the differential phase signal. According to the differential principle, the influence of common-mode noise can be eliminated at the physical level, significantly improving the system's anti-interference capability. Simultaneously, an adaptive compensation module provides real-time feedback adjustment of the deviation between the differential phase signal and the target phase, further suppressing residual differential-mode interference and locking the phase difference within a high-precision range. This achieves a shift from "passive screening" to "active suppression," avoiding the waste of computational resources caused by data discarding. Furthermore, the spin-state discrimination method based on the polarity of the differential amplitude signal is naturally immune to absolute power fluctuations. Compared to traditional single-end detection schemes, it not only eliminates the need to discard any data but also improves the signal-to-noise ratio. This effectively ensures the long-term stable operation of the quantum computing system in complex environments. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other embodiments based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the anti-interference device for an optical parametric oscillation unit according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram illustrating the differential DOPO common-mode suppression principle of an embodiment of the present invention; Figure 3 This is a comparison diagram of the differential spin state discrimination and absolute discrimination waveforms of an embodiment of the present invention; Figure 4 This is a block diagram of the adaptive PZT compensation loop according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the on-chip differential DOPO cell structure according to an embodiment of the present invention; Figure 6 This is a schematic flowchart of an anti-interference method for an optical parametric oscillation unit according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the structure of a quantum computing system according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 100. Anti-interference device; 110. Optical parametric oscillation module; 111. First degenerate optical parametric oscillator; 112. Second degenerate optical parametric oscillator; 120. Differential phase detection module; 121. Interference detection submodule; 1211. Balance detector; 122. State discrimination submodule; 130. Adaptive compensation module; 131. Error calculation submodule; 132. Execution drive submodule; 1321. PID controller; 140. Drive allocation module; 141. Laser source; 142. Beam splitter; 150. Phase adjustment actuator; 151. Piezoelectric phase shifter; 152. PZT driver; 300. Quantum computing system; 310. Anti-interference device array; 320. Control network. Detailed Implementation

[0023] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0024] To address the issue of phase drift in the spin state of degenerate optical parametric oscillators caused by environmental interference in related technologies, embodiments of this invention provide an anti-interference device, method, and quantum computing system for an optical parametric oscillator unit.

[0025] like Figure 1 , Figure 4 and Figure 5 As shown, an anti-interference device 100 for an optical parametric oscillation unit provided by an embodiment of the present invention includes an optical parametric oscillation module 110, a differential phase detection module 120, and an adaptive compensation module 130.

[0026] Among them, the optical parametric oscillation module 110 includes two phase differences of The degenerate optical parametric oscillator (DOPO) consists of two degenerate optical parametric oscillators configured to receive a drive signal with a preset phase difference, and to output a first oscillation signal and a second oscillation signal with common-mode interference characteristics, respectively. Specifically, as shown... Figure 4The adaptive PZT compensation loop diagram shown indicates that the optical parametric oscillator module 110 can physically be represented as an on-chip integrated microcavity structure, such as a ring resonator or Fabry-Perot cavity on a thin-film lithium niobate (TFLN) platform. The two degenerate optical parametric oscillators are a first degenerate optical parametric oscillator 111 and a second degenerate optical parametric oscillator 112, respectively. They maintain a high degree of symmetry in geometry, material properties, and fabrication process, and are spatially adjacent to each other to ensure they are in substantially the same thermal and mechanical environment. When an external driving signal is injected, a specific phase delay structure maintains a π-phase difference in the pump light entering the two degenerate optical parametric oscillators, thereby ideally locking the two degenerate optical parametric oscillators to two orthogonal phase states of 0 and π, respectively. Due to the identical physical environment of the two degenerate optical parametric oscillators, external environmental interference (such as temperature drift, mechanical vibration, and acoustic noise) introduces disturbance components with highly consistent amplitude and phase change trends into the first oscillation signal output by the first degenerate optical parametric oscillator 111 and the second oscillation signal output by the second degenerate optical parametric oscillator 112, thus forming common-mode interference characteristics. This common-mode characteristic is the material basis for subsequent noise cancellation; its essence is to map environmental noise into a common mode of the two channels, rather than independent random noise.

[0027] Furthermore, the differential phase detection module 120 is configured to acquire the differential phase signal between two degenerate optical parametric oscillators based on the first oscillation signal and the second oscillation signal. Specifically, the optical input terminal of the differential phase detection module 120 is coupled to the output waveguides of the first degenerate optical parametric oscillator 111 and the second degenerate optical parametric oscillator 112, respectively. This module extracts the differential phase signal characterizing the relative phase relationship between the two optical signals by performing interference or balanced detection processing on the two optical signals. Figure 2 The diagram shown illustrates the common-mode suppression principle of differential DOPO. According to the common-mode suppression principle, if the ideal oscillation phase of the first degenerate optical parametric oscillator 111 is assumed to be... The ideal oscillation phase of the second degenerate optical parametric oscillator 112 is The common-mode phase noise introduced by environmental interference is The actual phases after interference are respectively and The differential phase signal output by the differential phase detection module 120 satisfies the following relationship:

[0028] As can be seen from the above formula, through differential operation, the common-mode noise superimposed on the two signals is... It is precisely canceled out mathematically, thus achieving first-order suppression of external environmental disturbances at the physical level.

[0029] Furthermore, the adaptive compensation module 130 is configured to generate a control signal based on the deviation between the differential phase signal and the target phase, and drive the phase adjustment actuator 150 to adjust the phase of the two degenerate optical parametric oscillators. Specifically, although the differential structure can eliminate common-mode interference, in actual engineering, residual differential-mode errors that are not completely canceled may still exist due to factors such as device fabrication errors, uneven thermal gradient distribution, or non-ideal drive signals. The adaptive compensation module 130 actively corrects such residual errors through a closed-loop feedback mechanism. This module monitors the differential phase signal in real time and compares it with a preset target phase (usually π) to calculate the phase deviation. Subsequently, a corresponding control signal is generated based on the magnitude and trend of the phase deviation, driving the phase adjustment actuator 150 (such as piezoelectric ceramic, thermo-optical modulation electrode, etc.) integrated on the optical parametric oscillator module 110 to fine-tune the cavity length or refractive index, forcing the differential phase to return to the target value. This collaborative working mechanism of "differential detection + active compensation" transforms the traditional passive data post-selection into real-time hardware-level active suppression, which not only avoids data loss and resource waste caused by phase instability, but also significantly improves the long-term operational stability and signal-to-noise ratio of the system in complex environments.

[0030] In some embodiments, the differential phase detection module 120 includes an interference detection submodule 121 and a state discrimination submodule 122. The interference detection submodule 121 is configured to perform interference processing on a first oscillation signal and a second oscillation signal to obtain a differential phase signal and a differential amplitude signal between the two degenerate optical parametric oscillators. The state discrimination submodule 122 is configured to determine the spin state of the optical parametric oscillator module 110 based on the polarity of the differential amplitude signal.

[0031] In a preferred embodiment, the interference detection submodule 121 includes a balanced detector 1211, which measures the phase difference between the outputs of two degenerate optical parametric oscillators and outputs it as a differential phase signal of the two degenerate optical parametric oscillators.

[0032] Specifically, such as Figure 4 The adaptive PZT compensation loop block diagram and Figure 5 The schematic diagram of the on-chip differential DOPO unit structure shown illustrates that the balanced detector 1211 integrates two photodiodes with highly matched spectral response characteristics, receiving the output optical signals from the first degenerate optical parametric oscillator 111 and the second degenerate optical parametric oscillator 112, respectively. In the optical path design, the two optical signals undergo beam combining or interference processing before entering the balanced detector 1211, ensuring that the difference in photocurrent output by the photodiodes is directly proportional to the cosine of the phase difference and the amplitude difference between the two optical signals. The detection bandwidth of the balanced detector 1211 is... It can achieve high-precision common-mode rejection without sacrificing real-time performance, providing an accurate error signal for subsequent PID feedback control to ensure... The locking accuracy is high. This hardware-level differential probe structure can not only output differential phase signals characterizing the relative phase relationship in real time, but also achieve high locking accuracy. It can also simultaneously output differential amplitude signals characterizing differences in light intensity. It should be understood that although this embodiment preferably uses a balanced detector 1211 as the implementation form of the interference detection submodule 121, in other embodiments, a discrete photodetector can be used in conjunction with a back-end analog subtractor circuit, or an integrated Mach-Zehnder interferometer structure can be used to achieve the same differential signal extraction function, as long as the relative phase and amplitude difference between the two signals can be obtained.

[0033] Specifically, the state discrimination submodule 122 utilizes differential amplitude signals. Decoding spin states and differential amplitude signals using sign characteristics. This represents the differential current, and has The specific discrimination logic is as follows: when the differential amplitude signal is greater than zero, the spin state of the optical parametric oscillation module 110 is determined to be the first spin state; when the differential amplitude signal is less than zero, the spin state of the optical parametric oscillation module 110 is determined to be the second spin state. For example, if the first spin state is defined as... The second spin state is When detected When the output light intensity of the first degenerate optical parametric oscillator 111 is greater than that of the second degenerate optical parametric oscillator 112, the system determines that it is currently in a state of... State; conversely, when At that time, it was determined to be state.

[0034] In the embodiments of this invention, this discrimination mechanism based on differential amplitude polarity has significant technical advantages over traditional absolute light intensity threshold discrimination. For example... Figure 3 The waveform comparison between differential spin-state discrimination and absolute discrimination is shown in the figure. In the traditional absolute detection scheme, the determination of the spin state depends on whether the output light intensity of a single degenerate optical parametric oscillator (DOPO) exceeds a certain fixed threshold. However, fluctuations in pump source power, changes in fiber coupling efficiency, or optical losses caused by ambient temperature can all cause the absolute light intensity baseline to drift. When the baseline drift exceeds the threshold tolerance, the system will produce a misjudgment even if the spin state has not changed. In the differential polarity discrimination scheme of this embodiment, since the two degenerate optical parametric oscillators share the same driving source and are physically adjacent, the above-mentioned interference factors have a highly correlated common-mode disturbance on the two signals. Assuming that the environmental disturbance causes the light intensity of both signals to simultaneously change to half of its original value... times ( Then the new differential amplitude signal becomes ,in This represents the photoelectric conversion gain coefficient of the photodetector. This represents the output photocurrent of the first degenerate optical parametric oscillator 111. This represents the output photocurrent of the second degenerate optical parametric oscillator 112. Clearly, as long as... If the value is positive, the sign (positive or negative) of the differential signal remains unchanged, thus making the spin state discrimination result naturally immune to absolute power fluctuations.

[0035] Furthermore, from the perspective of statistical signal processing, differential detection can effectively improve the signal-to-noise ratio of the system. This assumes that each of the two signals contains independent random noise components. and Their variances are all In single-ended detection, the signal-to-noise ratio is limited by... In differential detection, although the amplitude of the signal difference may vary, the noise difference ( The variance of ) is The standard deviation is For quantum computing applications such as the coherent Ising machine, the information of the spin state is encoded in orthogonal states of phase 0 and π, and the differential operation precisely maximizes the distinguishability between these two orthogonal states. Both theoretical analysis and experimental verification show that, under the same ambient noise background, the equivalent signal-to-noise ratio of the differential polarity discrimination scheme is significantly improved compared to single-end absolute discrimination. This means that, while achieving the same bit error rate requirement, this embodiment allows the system to operate stably in lower optical power or more severe noise environments, or to further reduce the computational error rate under the same conditions. Figure 3 The waveform on the right visually demonstrates this effect: even and The difference curve fluctuates synchronously over time. The zero-crossing position remains locked, ensuring accurate capture of the state transition moment and completely eliminating timing jitter caused by threshold drift.

[0036] In some embodiments, the adaptive compensation module 130 includes an error calculation submodule 131 and an execution driving submodule 132. The error calculation submodule 131 is configured to calculate the phase deviation between the differential phase signal and the target phase. The execution driving submodule 132 is configured to generate a control signal based on the phase deviation to drive the phase adjustment actuator 150 to adjust the cavity length or refractive index of the two degenerate optical parametric oscillators.

[0037] Specifically, such as Figure 4As shown, the adaptive compensation module 130 in this embodiment constitutes a high-precision closed-loop feedback control system. The error calculation submodule 131 receives the real-time differential phase signal output from the differential phase detection module 120. and compare it with the preset target phase. A comparison is made. In applications involving two degenerate optical parametric oscillators (OPOs), to maintain the two OPOs in a quadrature, anti-phase state to achieve optimal common-mode suppression, the target phase... The phase deviation is typically set to π. The error calculation submodule 131 outputs the phase deviation. It can be represented as:

[0038] This phase deviation It is then sent to the execution driver submodule 132. The execution driver submodule 132 typically integrates a digital signal processing unit or analog control circuitry to handle phase deviations. The magnitude, direction, and trend of change are determined according to a predetermined control algorithm to generate corresponding control signals. These control signals, after digital-to-analog conversion and high-voltage amplification, are applied to the phase adjustment actuator 150. By changing the optical path length or the refractive index of the medium, the phase of the degenerate optical parametric oscillator is fine-tuned, forcing a phase deviation... The phase approaches zero, thus achieving active phase locking.

[0039] Understandably, in executing the control strategy of the drive submodule 132, this embodiment adopts a proportional-integral-derivative (PID) feedback control algorithm. The PID controller 1321 can comprehensively consider the current value, cumulative amount, and rate of change of the error, and the mathematical expression corresponding to its discretized control law is:

[0040] in, Indicates the first The control voltage signal output at each sampling time. Indicates the first Phase deviation at each sampling time (i.e., the aforementioned) (with symbols) This represents the proportionality coefficient. Represents the integral coefficient. This represents the differential coefficient. In this phase-locked system, the proportional term... Provides a fast response to phase disturbances; integral term Used to eliminate steady-state errors caused by device aging or slow drift in ambient temperature, ensuring that locking accuracy remains high over a long period of time (e.g., ); Differential term This predicts the trend of error changes, increases system damping, and effectively suppresses phase overshoot and oscillation caused by mechanical resonance or circuit delay. It should be understood that although this embodiment uses PID control as an example, other implementations may employ advanced algorithms such as adaptive control, fuzzy control, or model predictive control, as long as they can achieve closed-loop regulation based on phase deviation.

[0041] In some embodiments, the phase adjustment actuator 150 includes at least one of a thermo-optic phase shifter, an electro-optic phase shifter, or a piezoelectric phase shifter 151. It is understood that a thermo-optic phase shifter utilizes the thermo-optic effect of a material to adjust the refractive index by changing the waveguide temperature through heating electrodes. Its advantages include a large adjustment range and low power consumption, but its response speed is relatively slow (typically on the millisecond level), making it suitable for compensating for low-frequency phase errors caused by slow ambient temperature drift. An electro-optic phase shifter utilizes a linear electro-optic effect (such as the Pockels effect), achieving a response speed on the nanosecond level, making it suitable for high-frequency modulation. However, on certain material platforms, it may suffer from high insertion loss or high half-wave voltage.

[0042] Furthermore, the adaptive compensation module 130 is configured to determine a phase-locked state when the phase deviation is less than a preset threshold within a consecutive preset number of cycles. In actual operating environments, differential signals may be subject to instantaneous interference from electromagnetic pulses or mechanical shocks, causing the phase deviation to occasionally fall within the threshold range for a short period. If locking is determined based on only a single or a few measurements, the system may output an incorrect "locked" flag before it has truly stabilized, leading to unreliable spin-state data being used in subsequent quantum computing tasks. By introducing a time window constraint of "a consecutive preset number of cycles," it is equivalent to adding a low-pass filter in the time domain. Only when the phase deviation remains continuously and stably within the allowable range is the system confirmed to have entered a steady state. For example, the preset number can be set to 10 to 100 clock cycles, and the preset threshold can be set according to the system's tolerance for phase accuracy. Or smaller.

[0043] In a preferred embodiment, the phase adjustment actuator 150 employs a piezoelectric phase shifter 151 (PZT). The PZT utilizes the inverse piezoelectric effect, applying a voltage to induce minute deformations in the piezoelectric ceramic material, thereby directly stretching the optical fiber or altering the physical length of the integrated waveguide. The PZT 151 combines high response bandwidth (approximately 100 kHz) and high resolution (up to [missing information]). The combined advantages of radians and low optical loss result in a phase range of [missing information]. – It is particularly suitable for real-time tracking and suppression of mid-to-high frequency phase disturbances caused by environmental vibration and noise, and is an ideal actuator for achieving high-precision active locking.

[0044] In a preferred embodiment, the phase adjustment actuator 150 further includes a PZT driver 152, which is disposed between the PID controller and the piezoelectric phase shifter 151. The PZT driver 152 receives a low-voltage control signal from the PID controller and converts it into a high-voltage signal required to drive the piezoelectric phase shifter 151. The PZT driver 152 includes a signal amplification circuit and a high-voltage output circuit. The signal amplification circuit amplifies and impedance-matches the error adjustment signal output by the PID controller 1321, and the high-voltage output circuit converts the amplified signal into a drive voltage (typically 0~150V) within the operating voltage range of the piezoelectric phase shifter 151. The bandwidth of the PZT driver 152 is matched to the mechanical response bandwidth of the piezoelectric phase shifter 151 (approximately 100kHz), ensuring that the phase delay of the closed-loop feedback system is minimized.

[0045] Furthermore, in the preferred embodiment employing the piezoelectric phase shifter 151, the adaptive compensation module 130 is further configured to: lock the phase difference between the outputs of the two degenerate optical parametric oscillators to a specific value based on PID feedback control of the piezoelectric phase shifter 151. Here The high-precision locking interval of the system was defined. In quantum computing applications such as the coherent Ising machine, the orthogonality of the spin states directly determines the accuracy of the calculation results. Theoretical analysis and experimental data show that when the phase difference deviates from π by more than π, the accuracy of the calculation results is significantly improved. At this point, the error rate of spin state discrimination will increase significantly and non-linearly. Therefore, the locking accuracy must be strictly controlled within a certain range. Within the range, that is (10 consecutive cycles) is not only a reflection of hardware performance, but also a necessary condition for ensuring the fidelity of quantum computing. Combining the high-resolution characteristics of the aforementioned piezoelectric phase shifter 151 with the steady-state error elimination capability of the PID algorithm, this embodiment can stably maintain the phase difference within this high-precision range. Even in the presence of external vibrations, it can ensure that the residual phase drift is extremely small (e.g., better than 0.005 rad / h), thus providing a reliable underlying anti-interference unit for large-scale quantum computing arrays.

[0046] In some embodiments, the anti-interference device 100 of the optical parametric oscillation unit further includes a drive distribution module 140, which includes a shared drive signal source, a beam splitter 142, and a phase delay line (not shown in the figure). The shared drive signal source is configured to output an initial drive signal, i.e. Figure 1 , Figure 4 and Figure 5 The laser source 141 is included. The beam splitter 142 is configured to split the initial drive signal into a first drive signal and a second drive signal. A phase delay line is disposed on the first drive signal or the second drive signal and configured to introduce a preset phase difference to form the drive signal.

[0047] Specifically, such as Figure 1 As shown, the drive distribution module 140 constitutes the input stage of the optical parametric oscillator module 110. Its core function is to provide pump energy with a strictly defined phase relationship to the two degenerate optical parametric oscillators. The shared drive signal source is typically a highly coherent laser or master oscillator, whose output initial drive signal has a single and stable frequency and phase reference. After entering the beam splitter 142, this initial drive signal is power-divided or distributed into two optical signals according to a specific ratio. To ensure that the first degenerate optical parametric oscillator 111 and the second degenerate optical parametric oscillator 112 can operate in an orthogonal antiphase state (i.e., a phase difference of π), a precise phase shift must be introduced in one of the optical paths. The phase delay line undertakes this crucial function.

[0048] In a preferred implementation of this embodiment, the phase delay line can be a half-wave plate ( (Wave plate). When linearly polarized light passes through a half-wave plate whose optical axis is at a specific angle to the polarization direction, its polarization state or phase will undergo a π-reversal; or on an integrated optical platform, the phase delay line can be designed as an optical path delay line of a specific length, utilizing geometric path difference. This generates a phase lag of π. It should be understood that although this embodiment uses a half-wave plate and an optical path delay line as examples, in other embodiments, the phase delay line can also take the form of an electro-optic modulator, a thermo-optic phase shifter, or a fixed-length fiber delay line, as long as a stable preset phase difference can be introduced into its optical path.

[0049] Therefore, this "shared source + physical delay" structural design in this embodiment is crucial for ensuring the performance of the differential DOPO system. First, since the two driving signals originate from the same shared driving signal source, they naturally inherit the same frequency and phase noise characteristics. This ensures that the pump light injected into the two degenerate optical parametric oscillators has extremely high mutual coherence, a physical prerequisite for subsequent interferometric detection and common-mode suppression. If two independent laser sources 141 are used for separate driving, even with phase-locked loop technology, it is difficult to achieve the intrinsic phase consistency of beam splitting from the same source, and it would significantly increase system complexity and cost. Second, as a passive or active optical element, the phase difference introduced by the phase delay line is mainly determined by the physical properties of the material (such as refractive index and thickness) or its geometry. Compared to purely electronic or software-configured phase control methods, it has higher long-term stability and electromagnetic interference resistance. For example, under conditions of slow changes in ambient temperature or fluctuations in power supply voltage, the fixed optical path delay or the π phase shift generated by the crystal waveplate will hardly drift, thus ensuring that the two degenerate optical parametric oscillators always maintain an ideal anti-phase pumping state. The phase stability of this input directly determines the differential signal. The high baseline quality allows the adaptive compensation module 130 to handle only minor residual errors, rather than significant initial phase mismatches, thereby significantly reducing the dynamic range requirements and locking difficulty of the feedback loop.

[0050] In some embodiments, the two degenerate optical parametric oscillators are microcavity structures, and the center-to-center distance between the two microcavity structures is less than or equal to 100 μm. Specifically, such as... Figure 4 As shown in the detailed diagram, both the first degenerate optical parametric oscillator 111 and the second degenerate optical parametric oscillator 112 employ on-chip integrated microcavity structures, such as ring resonators or photonic crystal microcavities etched on a thin-film lithium niobate (TFLN) platform. This microcavity structure possesses extremely high energy localization capability, serving as the material basis for achieving low-threshold parametric oscillations. In this embodiment, the center-to-center distance between the two microcavities is strictly designed to be less than or equal to 100 μm; for example, in a preferred embodiment, this center-to-center distance is set to 50 μm. This dimensional parameter is not arbitrarily set but is based on in-depth physical considerations of the spatial correlation of environmental disturbances. In actual operating environments, temperature field distribution and mechanical vibration modes typically exhibit certain spatial gradients. When the center-to-center distance between the two microcavities is controlled within 100 μm, the local thermal and stress environments in which they reside can be considered quasi-uniform, i.e., environmental temperature variations... and mechanical deformation Phase perturbation generated in the two microcavities Maintaining high consistency in amplitude and phase is crucial. If the spacing is too large, for example, exceeding millimeters, the thermal gradient on the chip surface or the strain difference caused by substrate bending will result in a significant decorrelation effect on the environmental noise sensed by the two microcavities. This prevents the common-mode component from being completely canceled by the differential detection module, thus reducing the system's anti-interference performance. Therefore, limiting the center-to-center spacing to within 100 μm is a key material condition for ensuring the effectiveness of common-mode suppression at the hardware geometry level. It should be understood that although this embodiment uses 50 μm as a preferred example, in other embodiments, as long as the two microcavities are under substantially the same environmental conditions, this spacing can be appropriately adjusted according to the specific packaging form, heat dissipation design, or material thermal conductivity. For example, it can be appropriately widened on substrates with better thermal uniformity, while in high-power integrated scenarios with large thermal gradients, it may need to be further reduced to 30 μm or even smaller.

[0051] In some embodiments, the common-mode rejection ratio (CMRR) of the two degenerate optical parametric oscillators is greater than 40 dB. A CMRR greater than 40 dB defines the actual ability of the anti-interference device 100 to suppress environmental noise. In optical differential systems, CMRR is typically defined as the logarithm of the ratio of common-mode gain to differential-mode gain, or more intuitively, as the ratio of the uncompensated ambient phase drift amplitude to the residual phase drift amplitude after differential processing. When the CMRR is greater than 40 dB, it means that the system can attenuate phase noise introduced by the external environment by at least 100 times. For example, if an ambient temperature fluctuation causes a 1 rad phase drift in a single microcavity, after processing by the differential structure created in this invention, only about 0.01 rad of error component remains in the output differential signal. This high level of CMRR depends not only on the aforementioned microcavity spacing design but also on the high symmetry of the fabrication process of the two microcavities and the precise matching of the driving signal phase. In actual testing or simulation verification, when the center-to-center distance between the two microcavities is 50 μm and the pump phase difference is precisely locked to π, the measured common-mode rejection ratio of the system in the 10 Hz to 1 kHz frequency band remains stable between 42 dB and 48 dB, fully verifying the effectiveness of the structural design. The establishment of this metric means that the subsequent adaptive compensation module 130 only needs to handle a very small range of residual errors, significantly reducing the dynamic range requirements and control difficulty of the feedback loop, and avoiding locking failure or response hysteresis problems caused by excessive initial mismatch.

[0052] Furthermore, to further enhance overall performance, the microcavity structure in this embodiment also possesses specific quality factor (Q value) and oscillation threshold parameters. Preferably, the Q value of a single degenerate optical parametric oscillator is greater than [value missing]. The oscillation threshold is below 10 μW. A high quality factor means a long photon storage time within the cavity, effectively narrowing the oscillation linewidth and improving the coherence of the output light, which is crucial for subsequent interferometric detection and spin state discrimination. The low oscillation threshold characteristic allows the system to initiate parametric oscillations with extremely low pump power, which not only reduces the overall power consumption and thermal load of the system and reduces thermally induced phase noise caused by the pump light itself, but also makes large-scale array integration possible. In high-density integrated quantum computing chips, thousands of DOPO units operate simultaneously. If the threshold of each unit is too high, the accumulated thermal effect will become a significant source of interference. Therefore, optimizing the geometry, coupling efficiency, and material loss of the microcavity to achieve a synergy between the quality factor and the low oscillation threshold is another important technical support for ensuring that the anti-interference device 100 can maintain high-performance operation in complex system integration environments. In summary, this embodiment constructs an anti-interference unit with a rigorous design from microstructure to macroscopic performance by limiting the microcavity spacing, CMRR index, Q value, oscillation threshold, and other multi-dimensional physical parameters.

[0053] like Figure 6 As shown in the figure, the present invention provides an anti-interference method for a differential optical parametric oscillation unit, which is implemented based on the device in the above embodiment. The method includes the following steps: S201, inject a drive signal with a preset phase difference into two structurally symmetrical degenerate optical parametric oscillators to obtain a first oscillation signal and a second oscillation signal.

[0054] Specifically, the initial drive signal output from the shared drive signal source is split into two paths by the beam splitter 142. One path, after introducing a π phase shift through a phase delay line, is injected into the first degenerate optical parametric oscillator 111 and the second degenerate optical parametric oscillator 112, respectively, along with the undelayed signal. Since the two low-oscillation-threshold oscillators are highly symmetrical in physical structure and spatially adjacent, this co-source pumping mechanism with a strict π phase difference forces the two oscillators to oscillate in two orthogonal phase states, 0 and π, respectively, thus outputting a first oscillation signal and a second oscillation signal carrying the same environmental common-mode noise but with opposite ideal phases. It should be understood that although this embodiment uses a π phase difference as an example, in other application scenarios, if the system encoding logic changes, the preset phase difference can be adjusted to other specific values, as long as it ensures that the two signals form an effective common-mode cancellation relationship during differential detection.

[0055] S202, based on the first oscillation signal and the second oscillation signal, acquire the differential phase signal and the differential amplitude signal.

[0056] Specifically, step S202 achieves information conversion from the optical domain to the electrical domain and preliminary suppression of common-mode noise. The first oscillation signal and the second oscillation signal are sent to the interferometric detection submodule 121 (such as the balanced detector 1211), and through photoelectric conversion and analog subtraction, the electrical signal characterizing the relative state of the two is demodulated in real time. Among them, the differential phase signal This reflects the degree to which the actual phase difference between the two degenerate optical parametric oscillators deviates from the target value π, and is mainly used for subsequent feedback control; differential amplitude signal This reflects the relative magnitude of the output light intensity of the two degenerate optical parametric oscillators, and is mainly used for the direct readout of the spin state. In this process, common-mode environmental disturbances superimposed on the two optical signals (such as synchronization phase changes caused by temperature drift) are automatically canceled out in the differential operation, so that the output differential signal retains only useful differential mode information and a very small amount of residual error.

[0057] S203, based on the polarity of the differential amplitude signal, determines the spin state of the optical parametric oscillation module 110.

[0058] Specifically, the system monitors the differential amplitude signal in real time. Symbolic characteristics: when When the current spin state is determined to be the first spin state (e.g., ...), the spin state is determined to be the first spin state. );when When the current spin state is determined to be the second spin state (e.g., ...), the spin state is determined to be the second spin state. This polarity-based discrimination method exhibits extremely high robustness in terms of timing. Even if fluctuations in pump power or changes in optical path loss occur during operation, causing simultaneous scaling of the absolute amplitudes of the two signals, the zero-crossing position of the differential signal will not shift as long as the relative strength relationship between the two signals remains unchanged, thus ensuring the accuracy of spin state determination. Compared to traditional absolute detection schemes that rely on fixed thresholds, this scheme does not require dynamic adjustment of the decision threshold based on environmental changes, significantly simplifying the complexity of backend digital signal processing.

[0059] S204 adjusts the phase of two degenerate optical parametric oscillators based on the phase difference between the differential phase signal and the target phase.

[0060] Specifically, step S204 constitutes the closed-loop feedback core of active anti-interference, aiming to eliminate residual differential-mode errors in the differential structure and lock the system at a high-precision operating point. In some embodiments, adjusting the phase of the two degenerate optical parametric oscillators based on the phase deviation between the differential phase signal and the target phase includes: A proportional-integral-derivative (PI-DE) control algorithm is used to generate an adjustment signal based on the phase deviation. Based on the adjustment signal, the phase adjustment actuator 150 is driven to change the cavity length or refractive index of the two degenerate optical parametric oscillators.

[0061] More in detail, such as Figure 4 As shown, the error calculation submodule 131 first calculates the real-time differential phase signal. Phase with target The phase deviation e between (usually π) Subsequently, the drive submodule 132 uses a PID control algorithm to process the deviation and generate a digital adjustment signal. When the phase adjustment actuator 150 is a piezoelectric phase shifter 151, the adjustment signal drives the piezoelectric ceramic to produce micron- or even nanometer-level mechanical deformation, directly stretching the physical length of the integrated waveguide or optical fiber, thereby precisely changing the optical path. When the phase adjustment actuator 150 is a thermo-optical or electro-optical phase shifter, the adjustment signal modulates the refractive index of the medium by changing the local temperature or electric field intensity, thereby achieving phase adjustment. Regardless of the physical mechanism used, the ultimate goal of this step is to force the differential phase... Real-time tracking and locking onto a very small neighborhood around the target phase π (e.g. Through this high-frequency, high-precision active adjustment, the system can effectively compensate for non-common-mode interference that cannot be completely eliminated by the differential structure, ensuring the phase stability (>24 h) and computational fidelity of the quantum computing unit during long-term operation. It should be understood that although this embodiment uses the PID algorithm as an example, in other implementations, adaptive control, sliding mode control, or neural network control algorithms can also be selected based on the system's dynamic characteristics, as long as the closed-loop feedback adjustment function based on phase deviation can be achieved.

[0062] According to a third aspect of the invention, a quantum computing system 300 is provided, such as... Figure 7 As shown, the quantum computing system 300 includes an anti-interference device array 310 and a control network 320. The anti-interference device array 310 includes anti-interference devices 100. The control network 320 is configured to distribute drive signals to the anti-interference device array 310 and collect the spin states output by each anti-interference device 100.

[0063] Specifically, this embodiment demonstrates the array-based integration of the aforementioned optical parametric oscillator unit anti-interference device 100 in a large-scale coherent Ising machine (CIM) system. In practical quantum computing tasks, solving combinatorial optimization problems with a large number of variables typically requires hundreds or thousands of spin nodes to perform parallel operations. Therefore, the anti-interference device array 310 is not a simple stack of units, but a large-scale computing core built on a high-density photonic integration platform. For example, in a preferred embodiment, the anti-interference device array 310 can be integrated on a thin-film lithium niobate (TFLN) chip with a chip size of approximately 10 mm × 10 mm, on which 128 pairs of differential degenerate optical parametric oscillator units are arranged. Since each pair of differential degenerate optical parametric oscillator units includes a first degenerate optical parametric oscillator 111 and a second degenerate optical parametric oscillator 112, it contains 256 microcavity structures. These units are physically laid out according to a preset topology (such as a one-dimensional chain, a two-dimensional mesh, or a fully connected graph) to support the mapping of a specific Ising model. It should be understood that although this embodiment uses 128 pairs of units as an example, in other embodiments, the array size can be expanded to hundreds, thousands or even more pairs of units according to computing needs, and the integration platform can also be replaced with silicon-based photonics, silicon nitride or III-V compound semiconductor platforms, as long as high-density optical parametric oscillator integration can be achieved.

[0064] Specifically, the control network 320, acting as the nerve center of the quantum computing system 300, undertakes the crucial functions of global signal scheduling and information aggregation. In terms of drive signal distribution, the control network 320 efficiently and uniformly distributes the pump light output from the shared drive signal source to each anti-interference device 100 in the array via an on-chip integrated optical waveguide bus. To ensure the consistency of the operating points of each unit, the control network 320 typically integrates adjustable attenuators or phase tuners to compensate for power and phase inhomogeneities caused by differences in optical path length or manufacturing errors. Regarding spin state collection, the control network 320 receives in real-time the spin state discrimination results (i.e., +1 or -1 states determined based on the polarity of the differential amplitude) output from the differential phase detection modules 120 in each anti-interference device 100. This state information can be directly transmitted to the back-end digital processing unit via parallel electrical readout interfaces, or it can be serially transmitted in the same optical fiber using optical multiplexing technology to reduce the number of I / O pins. Because each anti-interference device 100 has its own independent active anti-interference capability, the control network 320 no longer needs to configure a complex external frequency stabilization or phase-locked loop circuit for each unit, which greatly simplifies the system architecture and improves the feasibility of large-scale integration.

[0065] Compared to traditional systems employing a post-selection scheme, the quantum computing system 300 provided in this embodiment exhibits significant quantitative advantages in terms of computational resource utilization and long-term stability. According to measured data, during a continuous 24-hour operation test, thanks to the synergistic effect of the differential structure and the adaptive compensation module 130, the residual phase drift of the anti-interference device array 310 was suppressed to within 0.005 rad / h, far superior to the approximately 0.5 rad / h drift level of the traditional single-ended DOPO system. This extremely high phase stability directly translates into savings in computational resources. In traditional post-selection schemes, the system must check phase stability after computation and discard operational data with excessive phase deviations due to environmental interference; typical data discard rates are as high as 20% to 40%. This means that to obtain a set of valid computational results, traditional systems require an average of 25% to 67% more additional running time and energy. This embodiment, through active suppression at the hardware level, achieves "zero-discard" effective data output. In other words, when performing quantum computing tasks of the same scale, the quantum computing system 300 of this application can save 20% to 40% of computing resources (including time, power consumption, and backend data processing overhead) compared to traditional solutions. In addition, since frequent restarts or recalibrations are not required, the system's continuous fault-free uptime (MTBF) is also significantly improved, making it more suitable for long-term quantum simulation tasks in industrial or scientific research applications.

[0066] It should be noted that the term "comprising" and its variations used in the embodiments of this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The modifications of "one" and "a plurality" mentioned in the embodiments of this invention are illustrative and not restrictive, and those skilled in the art should understand that unless explicitly indicated otherwise in the context, they should be understood as "one or more".

[0067] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in the embodiments of this invention are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0068] The steps described in the method embodiments provided by the present invention can be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of protection of the present invention is not limited in this respect.

[0069] The term "embodiment" in this specification refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily imply the same embodiment, nor does it imply independence or alternativeity from other embodiments. The various embodiments in this specification are described in a related manner, with reference to each other for similar or identical parts. In particular, for apparatus, device, and system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, and relevant details are referred to in the description of the method embodiments.

[0070] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An anti-interference device for an optical parametric oscillation unit, characterized in that, include: Optical parametric oscillation module, including two phase differences of Two degenerate optical parametric oscillators are configured to receive a drive signal with a preset phase difference, so as to output a first oscillation signal and a second oscillation signal with common-mode interference characteristics, respectively. The differential phase detection module is configured to acquire the differential phase signal between the two degenerate optical parametric oscillators based on the first oscillation signal and the second oscillation signal. The adaptive compensation module is configured to generate a control signal based on the deviation between the differential phase signal and the target phase, and drive the phase adjustment actuator to adjust the phase of the two degenerate optical parametric oscillators.

2. The anti-interference device according to claim 1, characterized in that, The differential phase detection module includes: The interference detection submodule is configured to perform interference processing on the first oscillation signal and the second oscillation signal to obtain the differential phase signal and differential amplitude signal between the two degenerate optical parametric oscillators; The state discrimination submodule is configured to determine the spin state of the optical parametric oscillation module based on the polarity of the differential amplitude signal.

3. The anti-interference device according to claim 2, characterized in that, The interference detection submodule includes a balanced detector, which measures the phase difference between the outputs of the two degenerate optical parametric oscillators and outputs it as a differential phase signal of the two degenerate optical parametric oscillators.

4. The anti-interference device according to claim 2, characterized in that, The state discrimination submodule is configured as follows: When the differential amplitude signal is greater than zero, the spin state of the optical parametric oscillation module is determined to be the first spin state; When the differential amplitude signal is less than zero, the spin state of the optical parametric oscillation module is determined to be the second spin state.

5. The anti-interference device according to claim 1, characterized in that, The adaptive compensation module includes: The error calculation submodule is configured to calculate the phase deviation between the differential phase signal and the target phase; The execution drive submodule is configured to generate the control signal based on the phase deviation to drive the phase adjustment actuator to adjust the cavity length or refractive index of the two degenerate optical parametric oscillators.

6. The anti-interference device according to claim 5, characterized in that, The phase adjustment actuator includes at least one of a thermo-optical phase shifter, an electro-optical phase shifter, or a piezoelectric phase shifter; The adaptive compensation module is further configured to determine a phase-locked state when the phase deviation is less than a preset threshold within a continuous preset number of periods.

7. The anti-interference device according to claim 6, characterized in that, The phase adjustment actuator includes a piezoelectric phase shifter; The adaptive compensation module is further configured to: lock the phase difference between the outputs of the two degenerate optical parametric oscillators to a certain value based on PID feedback control of the piezoelectric phase shifter. .

8. The anti-interference device according to claim 1, characterized in that, It also includes a driver allocation module, which includes: Shared drive signal source, configured to output initial drive signal; A beam splitter is configured to split the initial drive signal into a first drive signal and a second drive signal; A phase delay line is disposed on the first driving signal or the second driving signal and configured to introduce the preset phase difference to form the driving signal.

9. The anti-interference device according to claim 7, characterized in that, The two degenerate optical parametric oscillators are microcavity structures, and the center-to-center distance between the two microcavity structures is less than or equal to 100 μm; and / or, The common-mode rejection ratio of the two degenerate optical parametric oscillators is greater than 40 dB.

10. An anti-interference method for a differential optical parametric oscillation unit, characterized in that, include: A drive signal with a preset phase difference is injected into two structurally symmetrical degenerate optical parametric oscillators to obtain a first oscillation signal and a second oscillation signal. Based on the first oscillation signal and the second oscillation signal, the differential phase signal and the differential amplitude signal are obtained; Based on the polarity of the differential amplitude signal, the spin state of the optical parametric oscillation module is determined; The phases of the two degenerate optical parametric oscillators are adjusted based on the phase difference between the differential phase signal and the target phase.

11. The anti-interference method according to claim 10, characterized in that, The step of adjusting the phases of the two degenerate optical parametric oscillators based on the phase deviation between the differential phase signal and the target phase includes: A proportional-integral-derivative (PID) control algorithm is used to generate an adjustment signal based on the phase deviation. Based on the adjustment signal, the phase adjustment actuator is driven to change the cavity length or refractive index of the two degenerate optical parametric oscillators.

12. A quantum computing system, characterized in that, include: An anti-interference device array, the anti-interference device array comprising a plurality of anti-interference devices as described in any one of claims 1 to 9; A control network is configured to distribute drive signals to the anti-interference device array and collect the spin states output by each of the anti-interference devices.

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