59 results about "Quantum technology" patented technology

The invention discloses a magnetic flux regulation crosstalk calibration method for quantum bits, and relates to the technical field of quantum, and the method comprises the steps: S1, obtaining an initial calibration parameter of a target quantum system through employing an initial crosstalk matrix; s2, generating a plurality of groups of random magnetic flux configuration signals containing magnetic flux regulation and control values by using the initial crosstalk matrix; s3, constructing a modified crosstalk matrix by using the random magnetic flux configuration signal; and S4, acquiring a correction calibration parameter by using the correction crosstalk matrix, performing error evaluation, if the error evaluation is met, completing correction, and if the error evaluation is not met, returning to the step S2. Compared with the prior art, the method has the advantages that the frequency offset matrix is constructed, the crosstalk matrix is corrected, and the corrected crosstalk matrix is generated by using the quasi-Monte Carlo method and the frequency offset matrix, so that the high sampling complexity in direct proportion to the square of the bit number in two-dimensional spectrum scanning is avoided; the method has the advantages of improving the calibration precision and reducing the complexity of a phase measurement experiment process.

The invention provides a video evidence obtaining method based on Transform and quantum features, and belongs to the technical field of crossing of multimedia content security and computer vision, and the method comprises the steps: S1, collecting multi-modal original data; s2, preprocessing the multi-modal data; s3, single-mode authenticity preliminary detection is carried out; s4, multi-modal feature fusion of quantum optimization is carried out; and S5, multi-modal authenticity comprehensive judgment is carried out. Through multi-mode cooperation and quantum technology innovation, the problems of insufficient robustness, inaccurate positioning and the like of a traditional evidence obtaining technology are effectively solved, and an efficient, accurate and feasible technical scheme is provided for authenticity verification of video content.

The invention provides a transaction risk identification method and device, electronic equipment, a medium and a program product, and can be applied to the technical field of quantum and the technical field of artificial intelligence. The method comprises the following steps: acquiring a high-dimensional feature vector related to a to-be-detected transaction; the high-dimensional feature vector is input into a quantum auto-encoder model constructed based on a parameterized quantum circuit for quantum feature compression, low-dimensional compression features are output, and the quantum auto-encoder model is obtained based on pre-training of a loss function weighted by abnormal risk samples; inputting the low-dimensional compression features into a classification model, and outputting a transaction risk probability value; and performing transaction risk identification on the to-be-detected transaction based on the risk probability value.

A current measurement method based on a quantum technology judges the range of formant appearance after current change of a measured wire through a frequency sweep result based on feature points, adaptively locks microwave frequency for frequency sweep, reduces the time cost of the frequency sweep process, greatly compresses the microwave frequency sweep time, and improves the measurement accuracy. The quantum state signal extraction speed can be remarkably improved while the relative high sensitivity is kept, non-contact real-time current measurement is achieved, and the method is characterized by comprising the steps that an atom source is close to a measured wire to couple a magnetic field signal generated by current in the measured wire; the atomic quantum state control system of the atomic source is connected with an upper computer through an electrical integration module, based on the optical detection magnetic resonance technology, in the measurement process, feature points are selected near formants of optical detection magnetic resonance for frequency sweeping, the positions of the feature points are updated in a self-adaptive mode based on the frequency sweeping result of the feature points, and the measurement accuracy is improved. A microwave signal frequency band is adaptively matched with a formant, a current measurement value is obtained, global frequency sweeping is replaced by feature point frequency sweeping, and the measurement speed is increased.

Systems and methods for detecting attacks on optical communication channels are presented. Techniques can include transmitting, from a sender to a receiver and through an optical communication channel, an optical signal, where the optical signal includes a classical optical signal representing first information and a quantum optical signal representing second information. Techniques can include detecting, by the receiver, third information from at least a portion of the quantum optical signal, and transmitting, by the receiver to the sender, the third information. Techniques can include determining, by the sender, an indication of an attack on the optical communication channel based on the second information and at least a portion of the third information. Techniques can include triggering an alarm based on the determination.

This invention discloses a method and system for geological and mineral exploration, belonging to the field of geological and mineral technology. The solution includes three core steps: First, a quantum gravity gradiometer array is constructed at the target mining site to collect quantum gravity data in each area to mark drilling target areas that meet the criteria. Second, fluid data from nanorobots tracking each drilling target area is analyzed to determine the nanorobot penetration plan and collect ore-forming fluid data. Finally, a three-dimensional fracture network model of the target mining site is constructed based on the ore-forming fluid data. By calculating the total clustering coefficient corresponding to the model, the design and analysis of the mining plan for the target mining site are completed. This solution integrates quantum technology and nanorobot tracking technology, and through data acquisition and modeling analysis, provides an innovative technical path and systematic analytical framework for the scientific formulation of geological and mineral exploration and mining plans.

This application discloses a network probing method, a QKD node, and a network probing system, belonging to the field of quantum technology. In this embodiment, a first QKD node in a QKDN receives a first probe request message. The first probe request message carries the identifiers of a second QKD node and a third QKD node. The second QKD node is a key distribution source node, and the third QKD node is a key distribution destination node. The first probe request message also carries a probe target, which indicates the information to be probed between the second and third QKD nodes. The first QKD node determines the probe result based on the probe target and transmits the probe result to the second QKD node. In this embodiment, the key distribution source node can probe a specific target in the key distribution process through the probe request message, facilitating maintenance personnel to perform maintenance on the key distribution process based on the probe results.

Embodiments of the present application relate to the field of quantum technology, and disclose a key distribution method and system, an electronic device and a storage medium. The key distribution method comprises: synchronizing with another key distribution node to obtain consistent key components from respective connected quantum key distribution nodes, and each quantum key distribution node is connected through a quantum key distribution network; and sending different key components in the consistent key components to a client through a secure connection based on an anti-quantum cryptography algorithm, respectively with the other key distribution node, so that the client and another client receiving the same key component negotiate to synthesize a symmetric key according to the obtained key component, and the same key component of the other client is from the key distribution node and the other key distribution node, and the key component from the key distribution node in the same key component is at least partially different. At least it is beneficial to reduce the deployment and application cost of the key distribution scheme while ensuring the security of the key distribution.

This application discloses methods and devices for a quantum chip, a quantum processor and a quantum computer, and relates to the field of quantum technology. The quantum chip includes a bottom sheet and a top sheet; a qubit array disposed on the top sheet, the qubit array comprising a plurality of qubits distributed in an array structure of M rows by N columns, and M and N being both integers greater than 1; a reading cavity disposed on the bottom sheet, and the reading cavity being configured to acquire status information of a qubit in the qubit array; and the bottom sheet and the top sheet being electrically connected.

The application discloses a kind of precision equipment vibration response prediction method, device, system and computer readable storage medium, applied to superconducting quantum technical field.The method comprises: the benchmark point of precision equipment is tested for vibration response, and the vibration response data of benchmark point is obtained;Based on the vibration response data of benchmark point, the vibration response data of benchmark point is analyzed using the neural network model related to benchmark point and target test point established in advance, and the vibration response data of target test point corresponding to benchmark point is obtained;Wherein, benchmark point is located on the surface of precision equipment, and target test point is located at the internal preset area of precision equipment;The vibration response data of target prediction point in extremely low temperature position can be predicted by vibration response test to benchmark point at normal temperature, combined with trained neural network model, to realize the vibration measurement of precision equipment under extremely low temperature condition.

The invention belongs to the technical field of quantum physics and quantum, and particularly relates to an AOD optical tweezers array automatic correction method and system based on a neural network, and the method comprises the following steps: generating an initial AOD optical tweezers array through an acousto-optic deflector; acquiring an image of the initial AOD optical tweezers array, and preprocessing the image; inputting the preprocessed image into a first neural network and a second neural network; calculating a global frequency compensation amount according to the average position deviation and a pre-calibrated frequency-position relation factor; generating an intensity compensation table covering a full frequency domain through an interpolation method based on the intensity gain compensation factors of the optical tweezers; and updating the driving frequency of the AOD according to the global frequency compensation amount, updating the driving amplitude of each channel of the AOD according to the intensity compensation table, and outputting the corrected AOD optical tweezers array. By integrating the neural network model and the closed-loop control process, the full automation of the position and intensity correction of the optical tweezers array is realized.

The invention provides a superconducting quantum chip, a preparation method thereof and electronic equipment, and relates to the technical field of superconducting quantum. The superconducting quantum chip is formed by reversely bonding the first quantum bare chip and the second quantum bare chip, so that the problem caused by the fact that all superconducting quantum bits and bottom circuits are prepared on the same two-dimensional plane in the prior art can be avoided, and the performance of the superconducting quantum chip is improved. Electric connection between the first quantum bare chip and the second quantum bare chip is achieved through laser-assisted bonding, and beam splitting laser can be accurately applied to the contact surfaces of the first conductive columns and the second conductive columns to complete bonding, so that the bonding strength between the first conductive columns and the second conductive columns can be improved; in addition, the influence of high temperature generated by the laser on the superconducting quantum bit structure outside the conductive column can be avoided, the potential damage of the thermal process on the coherence performance of the quantum bit is reduced to the maximum extent, the reliability of the superconducting quantum chip is improved, and the performance of the superconducting quantum chip is improved.

The present application belongs to the field of quantum physics and quantum technology, and particularly relates to an autofocus method for atomic imaging, comprising the following steps: acquiring a fluorescence or absorption image of single atoms in a region to be imaged to obtain two-dimensional gray image data; determining the position of single atoms in the two-dimensional gray image data, and intercepting a region of interest (ROI) of a preset size centered on the position of single atoms; calculating the centroid coordinates of a light spot in the ROI, and taking the centroid as a reference center of a subsequent sharpness evaluation index; calculating a sharpness evaluation index based on the ROI, and combining the sharpness evaluation index according to a preset weight to obtain a sharpness score S; performing a focus search strategy, including an initial scanning stage and a hill climbing search stage, to determine an optimal focus position z best ; and controlling an electric displacement table to adjust the camera to the optimal focus position z best . The present application can improve imaging resolution and signal-to-noise ratio, reduce manual intervention, quickly adapt to different experimental modes, and improve experimental efficiency.

The invention provides a circularly polarized light emission working substance based on a nonlinear chiral effect and a preparation method and application thereof, and the circularly polarized light emission working substance is prepared by taking metal halide, chiral organic cations, H3PO2 and haloid acid as raw materials through a cooling growth method. According to the invention, the circular polarization emission based on the nonlinear chiral effect of chiral perovskite is easy to integrate and process, and can generate a high asymmetric factor gCP-SHG; compared with a traditional 1 / 4 wave plate, the wave plate is more suitable for an integrated optical path; and compared with the linear chiral luminescence effect of chiral perovskite, the asymmetric factor is several orders of magnitude greater, so that the perovskite has higher practical value. Meanwhile, the perovskite material is easy to adjust, so that the asymmetric factor of the perovskite material can be further enhanced by adjusting the elements of the perovskite. Therefore, the method has a good application prospect in the fields of information encryption, quantum technology and three-dimensional display.

The invention discloses a construction method of a bridging and piling all-in-one machine based on a quantum technology and an electromagnetic geophysical prospecting method. The bridging and piling all-in-one machine comprises an integrated structure and an intelligent sensing and control system. The construction method comprises the steps of synchronous investigation and foundation pretreatment, real-time pile forming and synchronous detection, pile end overload prepressing and settlement completion, cyclic propelling and continuous beam erecting. According to the method, the functions of investigation, pile forming, detection, bearing platform construction and bridging can be integrated in the construction process, and the construction process, namely the detection process, single pile and sensor and global data driving decision can be achieved.

The application relates to the field of quantum technology and discloses a signature method and a signature verification method for a quantum blockchain and an electronic device. The signature method comprises the following steps: acquiring a first seed and a data block sequence, wherein the first seed is a quantum random number, each data block in the data block sequence is a quantum random number, or the data block sequence is a hash chain generated by taking a quantum random number as a seed; performing an HMAC operation according to the first seed and the data block sequence to generate a first hash chain; using an unused hash value in the first hash chain as a key to generate a digital signature of a first message; and sending a digest and a digital signature of the first message for a receiver to verify the digest of the first message according to the digital signature of the first message. The operation efficiency and the security of the quantum blockchain can be improved.

There is herein provided a method of quantum communication, the method comprising: indicating to a quantum receiving apparatus that a first sequence of mutually non-orthogonal bases will be used to prepare at least some of a plurality of bits in quantum states, at a quantum transmitting apparatus, preparing each of the plurality of bits in a respective one of a second sequence of mutually non-orthogonal bases, to give a plurality of qubits, wherein the second sequence of mutually non-orthogonal bases is different to the first sequence of mutually non-orthogonal bases.

The invention provides a superconducting quantum bit coupling structure, a superconducting quantum chip and a quantum computer, and relates to the technical field of quantum. The superconducting quantum bit coupling structure comprises a first superconducting quantum bit, a second superconducting quantum bit and a coupler, the first superconducting quantum bit is connected with a first node of the coupler through a first bypass capacitor, and the second superconducting quantum bit is connected with a second node of the coupler through a second bypass capacitor; the first Josephson junction and the third bypass capacitor of the coupler meet a target condition, so that when the magnetic flux in a first loop formed by the first Josephson junction, the second Josephson junction and the third Josephson junction of the coupler is 0, the coupling between the first superconducting quantum bit and the second superconducting quantum bit is closed. Therefore, the problem of crosstalk caused by short distance of the quantum bits in the prior art can be solved, coupling closing between the quantum bits when the magnetic flux is 0 is realized, and the precision requirement of magnetic flux regulation and control is reduced.

The invention provides an electronic point defect detection method, and relates to the technical field of quantum. The electronic point defect detection method comprises the following steps: controlling the wavelength of first ionization light to change in a wavelength range, irradiating any one of a plurality of sub-regions of a solid to be detected, and determining an ionization spectrum of a fluorescent probe point defect corresponding to the sub-region; under the condition that it is determined that the electronic point defects exist in the sub-regions according to the ionization spectrums, iteratively executing the following operations until the changed ionization spectrums meet preset conditions, and determining the types of the electronic point defects of the sub-regions according to the ionization spectrums meeting the preset conditions; the threshold wavelength represents a critical wavelength for ionizing all electron point defects in the sub-region; changing the wavelength range, the power and the irradiation duration of the first ionization light, and re-irradiating the sub-region by using the changed first ionization light to obtain a changed ionization spectrum; wherein the changed wavelength range is determined according to the threshold wavelength.

Qubit arrays, such as neutral atom arrays and ion arrays, provide versatile platforms for quantum information processing. However, in large-scale arrays, efficient photon collection remains a bottleneck for fast, non-destructive qubit readout and remote entanglement distribution. Our cavity-based approach enables fast, parallel operations over many qubits using multiple modes of a single optical cavity. By selectively shifting the relevant atomic transitions, each qubit can be coupled to a distinct cavity mode, allowing independent simultaneous processing. Practical systems support cavity-mode multiplexing with large numbers of modes, enabling rapid mid-circuit syndrome extraction and significantly enhancing entanglement distribution rate between remote atom arrays. Our technology provides a scalable solution to core challenges in qubit arrays, advancing the development of practical quantum technologies.

The invention discloses an air-space integrated quantum high-energy laser platform (YRCW stubble for short), and belongs to the technical field of aerospace, directional energy weapons and space resource development. The platform adopts a flying wing type fusion body aerodynamic layout, and the core is that advanced subsystems such as a thorium-based molten salt reactor energy system, a quantum high-energy laser transmitter and a quantum radar detection module are integrated; through cooperation of eight steps of energy activation, energy storage preparation, perception construction, system readiness, global maneuvering, target strike, communication guarantee and multi-domain adaptive adjustment, global maneuvering (the speed is more than 0-25 Mach, and the flight height is more than 0-80 thousand kilometers) from airport horizontal takeoff to near-earth orbit deployment is realized. The system has the remarkable advantages that nuclear energy, quantum technologies and directional energy weapons are deeply fused, and a comprehensive aerospace combat platform with strategic early warning, remote accurate strike, on-orbit service and space resource development capabilities is formed. The platform core subsystem can be independently expanded to land-based, ship-based, stratosphere air-based and space-based application scenes. Particularly, the invention provides an independent energy source and application scheme of the thorium-based molten salt reactor power generation module in remote mountainous areas, disaster rescue and lunar helium-3, water and ice resource development, and detailed technical and economic data are supplemented, so that the practical value and strategic significance of the technology are greatly expanded.

The invention relates to the technical field of quantum, and particularly provides a quantum confidential query method, device and equipment, a medium and a product. In the disclosure, an original generated key is acquired, the original generated key is related to a measurement base of a second user, and the original generated key comprises a plurality of bits; generating a sparse key based on the parity check value corresponding to the original generated key; performing replacement processing on the sparse key to obtain an intermediate key; performing shift processing on the intermediate key to obtain a final key; and querying in database encryption information from the second user by using the final key to obtain target data. The original generated key is obtained through the bit with the random length, so that the first user can obtain the bit number with the random length through one-time query, the communication complexity is reduced, and the efficiency is improved. Moreover, error correction detection is completed on the original generated key by generating the sparse key, errors caused by channel noise are avoided, and thus channel loss can be tolerated. Therefore, the accuracy of quantum confidential query can be improved.

The present invention relates to a system and method for quantum processing framework development comprising an integrated quantum processing control device configured to interface with at least one quantum processing unit. The system includes a program interpretation processor for converting high-level quantum technique definitions into an abstract syntax representation, an intermediate representation processor for generating a hardware-independent graph data structure, a topology mapping processor for mapping logical qubits onto physical qubits based on connectivity and calibration data, and a scheduling processor for optimizing execution order in view of coherence and fidelity parameters. A pulse synthesis processor generates time-domain waveform instructions corresponding to mapped quantum gate operations, and a real-time control processor transmits synchronized control signals to digital-to-analog conversion circuitry while acquiring measurement data through analog-to-digital conversion circuitry. A hybrid synchronization processor coordinates classical post-processing and conditional quantum operations within deterministic latency constraints.

The present invention relates to a coplanar waveguide transmission line, a quantum chip and a construction method for a wiring model thereof. The coplanar waveguide transmission line comprises a central conduction band, grounding conduction bands, and a trapezoidal module. The grounding conduction bands are arranged on two sides of the central conduction band, and gaps are maintained between the grounding conduction bands and the central conduction band. The trapezoidal module comprises a plurality of trapezoidal units, and the plurality of trapezoidal units are arranged, at equally spaced intervals, on any side of the central conduction band. This design can reduce far-end crosstalk and reduce electromagnetic radiation. The trapezoidal structure increases the capacitive impedance, which not only solves the problem of impedance increase caused by the reduction of the trace width due to high-density wiring, but also reduces the far-end crosstalk because far-end crosstalk is generally created inductively. When applied to quantum chips, the design helps improve the performance and stability of quantum chips and promote the development of quantum technology.

The application provides a kind of electronic point defect detection method, it is related to quantum technical field.The electronic point defect detection method includes: the wavelength of first ionizing light is changed in wavelength range and irradiates any sub-region of the multiple sub-regions of the solid to be measured, determines the ionization spectrum of the fluorescent probe point defect corresponding to the sub-region;In the case where the ionization spectrum determines that there is an electronic point defect in the sub-region, the following operations are iteratively performed until the modified ionization spectrum meets the preset condition, and the type of the electronic point defect in the sub-region is determined according to the ionization spectrum that meets the preset condition: the threshold wavelength is determined according to the ionization spectrum, the threshold wavelength represents the critical wavelength that ionizes all electronic point defects in the sub-region;The wavelength range, power and irradiation time of the first ionizing light are changed, and the sub-region is irradiated again using the changed first ionizing light to obtain a modified ionization spectrum;Wherein, the modified wavelength range is determined according to the threshold wavelength.

The present disclosure relates to atomic quantum and photonic devices and methods, such as atomic radio devices and methods. Various aspects of atomic radios are described. More specifically, the present disclosure describes an atomic radio device and associated hardware. Methods for performing radio communication, sensing, and imaging are described. The present disclosure also describes laser, optical, photonic, atomic-photonic, and hybrid micro-integrated subsystems for Rydberg excitation, spectroscopy, and quantum technology.

The application belongs to the field of quantum physics and quantum technology, and particularly relates to an AOD optical tweezer array automatic correction method and system based on a neural network, comprising the following steps: generating an initial AOD optical tweezer array through an acousto-optic deflector; collecting an image of the initial AOD optical tweezer array and pre-processing the image; inputting the pre-processed image into a first neural network and a second neural network; calculating a global frequency compensation amount according to the average position deviation and a pre-calibrated frequency-position relationship factor; generating an intensity compensation table covering the whole frequency domain through an interpolation method based on the intensity gain compensation factor of each optical tweezer; updating the driving frequency of the AOD according to the global frequency compensation amount, and updating the driving amplitude of each channel of the AOD according to the intensity compensation table, and outputting the corrected AOD optical tweezer array. Through the integration of the neural network model and the closed-loop control process, the position and intensity correction of the optical tweezer array is fully automated.

Disclosed are a silicon wafer and a method for filling a silicon via thereof, and belong to the field of superconducting quantum technologies. The method includes: obtaining a silicon wafer including at least one silicon via; providing a superconducting material on at least one side of the silicon wafer, the at least one side comprising a side where an opening of the silicon via is located; and heating and pressurizing the superconducting material to fill the superconducting material into the silicon via.

The invention relates to methods and systems for operating a quantum computing device to sample from an approximate stationary distribution of a Markov chain P having n states, through the construction and execution of a quantum circuit, said method comprising the step of: Initialize an ancilla qubit to the ∣0> state and at least one qubit register in its initial state; Prepare an unitary matrix U, which encodes a discriminant D in block form, allowing polynomial transformations of its singular values or eigenvalues; Apply successively a single qubit gate on the ancilla qubit and the ancilla controlled unitary matrix U on the qubit registers creating a reflection about an approximation of the stationary distribution of the Markov Chain P; and Prepare an approximation of the sought coherent quantum state associated with the stationary distribution, preferably using quantum amplitude amplification

Housings (DE, WA, BO, LF1 to LF6) with a sensor system (IC, PL, PD1, BD1 to BD3, NV1, F1) and / or quantum technology system, which is hereinafter also referred to simply as a sensor system (IC, PL, PD1, BD1 to BD3, NV1, F1), wherein the housing (DE, WA, BO, LF1 to LF6) has a cavity (CAV) and wherein the housing (DE, WA, BO, LF1 to LF6) comprises a premolded open-cavity housing (WA, BO, LF1 to LF6) and wherein the sensor system (IC, PL, PD1, BD1 to BD3, NV1, F1) comprises a paramagnetic center (NV1) in the material of a sensor element and / or quantum technology device element that is part of the sensor system and wherein the sensor system (IC, PL, PD1, BD1 to BD3, NV1, F1) includes a receiver (PD1) and wherein the sensor system (IC, PL, PD1, BD1 to BD3, NV1, F1) comprises an integrated circuit (IC) and an evaluation circuit (M1, TP, M2, G) for generating an output signal (out) and wherein the sensor system (IC, PL, PD1, BD1 to BD3, NV1, F1) comprises a source (PL1) for excitation radiation (LB, LB1a, LB1b), in particular an LED (PL1), and wherein the sensor element with the paramagnetic center (NV1) is located in the cavity (CAV) of the housing (DE, WA, BO, LF1 to LF6) and wherein the receiver (PD1) is located in the cavity (CAV) of the housing (DE, WA, BO, LF1 to LF6) and wherein the source (PL1) for excitation radiation (LB, LB1a, LB1b) is located in the cavity (CAV) of the housing (DE, WA, BO, LF1 to LF6) and wherein the circuit (IC) is located in the cavity (CAV) of the package (DE, WA, BO, LF1 to LF6) and wherein the excitation radiation (LB, LB1a, LB1b) of the source (PL1) for excitation radiation (LB, LB1a, LB1b) causes the paramagnetic center (NV1) to emit fluorescence radiation (FL) and wherein this emission of this modulated fluorescence radiation (FL) depends on the magnetic flux at the location of the paramagnetic center (NV1) in the material of the sensor element and on the modulation of the incoming excitation radiation (LB, LB1a, LB1b) and wherein the housing (DE, WA, BO, LF1 to LF6) includes means (RE), - which direct the excitation radiation (LB, LB1a, LB1b) of the source (PL1) onto the paramagnetic center (NV1) and thus couple the source (PL1) for excitation radiation (LB, LB1a, LB1b), in particular the LED (PL1), with the paramagnetic center (NV1) inside the housing (DE, WA, BO, LF1 to LF6) and wherein the housing (DE, WA, BO, LF1 to LF6) includes a first filter (F1) which is an optical filter, and wherein the first filter (F1) is transparent to the fluorescence radiation (FL) of the paramagnetic center (NV1) in the material of the sensor element and where the first filter (F1) is not transparent to the excitation light of the source (PL1) for excitation radiation (LB, LB1a, LB1b) and wherein the receiver (PD1) receives and processes fluorescence radiation (FL) from the paramagnetic center (NV1) and wherein the receiver (PD1) together with the first filter (F1) forms a receiver which is essentially sensitive only to the fluorescence radiation (FL) of the paramagnetic center (NV1) in the material of the sensor element and is essentially not sensitive to the excitation radiation (LB, LB1a, LB1b) of the LED (PL1), and wherein the receiver (PD1) converts the detected fluorescence radiation (FL) into a received signal (S0) and wherein the sensor system is configured to generate a reduced received signal (S1) from the received signal (S0) by subtracting a feedback signal (S6) from the received signal (S0) by means of electrical feedback, or to generate the reduced received signal (S1) by means of optical compensation by irradiating a compensation LED (PLK) into the receiver (PD1), wherein the operation of the compensation LED (PLK) depends on the feedback signal (S6), and wherein the circuit (IC) and the evaluation circuit (M1, TP, M2, G) form a filter output signal (S4) from the reduced received signal (S1) and wherein the sensor system is configured to generate the feedback signal (S6) from the filter output signal (S4) and the transmit signal (S5), and where the filter output signal (S4) is then a measure of the amplitude of the fluorescence radiation (FL) reaching the receiver (PD1) and where the filter output signal (S4) is the output signal (out).