44 results about "Quantum noise" patented technology

The invention discloses a quantum measurement and control data processing method and device, and belongs to the technical field of data processing.The quantum measurement and control data processing method and device comprises the following specific steps that firstly, wavelet packet decomposition is conducted on an original measurement signal through a quantum noise feature extraction module, and a quantum noise feature extraction module is obtained; carrying out matched filtering with a preset quantum noise fingerprint database; and 2, performing quantum state reconstruction on the filtered signal by adopting a compressed sensing algorithm, wherein a measurement matrix is dynamically generated according to the Hamiltonian of a quantum system. Through combination of wavelet packet decomposition (time-frequency locality) and a dynamic measurement matrix (Hamiltonian relevance), compared with a traditional Fourier method, quantum state reconstruction errors are greatly reduced, time sequence dependence is captured through an LSTM network, physical legality is guaranteed through a quantum main equation, control parameter speed is optimized, 2ns-level time sequence precision is achieved through an FPGA segmentation correction algorithm, and the method has the advantages of being simple in structure, convenient to operate and high in practicability. And the real-time requirement of the quantum error correction code is met.

The invention discloses a data index secure access method and related equipment, and relates to the technical field of data processing.The method comprises the steps that in response to a data access instruction, a dynamic index topological structure matched with a current network delay jitter value is generated based on a dynamic behavior fingerprint of a request terminal; performing real-time reconstruction on the dynamic index topological structure based on spatial and temporal distribution characteristics of the dynamic behavior fingerprints to generate an anti-collision verification path; a quantum noise signal is injected into the anti-collision verification path to form a cross-layer verification channel; performing asymmetric hash chain verification on the target data index through a cross-layer verification channel, and generating a verification result containing a fuzzy topology mark; performing dynamic remapping on the original index node according to the fuzzy topology mark, and outputting a security data index; and performing data access based on the secure data index. According to the method, the dynamicity, the unpredictability and the anti-analysis capability of the index path are realized, and the security and the anti-attack capability in the data access process can be comprehensively improved.

The invention discloses a monitoring camera image anomaly detection method and system, and relates to the technical field of intelligent monitoring, and the method comprises the steps: obtaining an original video stream, extracting a pixel matrix of a current frame, carrying out the joint coding of the pixel matrix and a motion vector field of an adjacent frame into a quantum state bit vector, inputting the quantum state bit vector into a pre-constructed anomaly detection operator, and carrying out the detection of the anomaly. Executing quantum state evolution calculation in the Hilbert space, and outputting a two-dimensional distribution matrix of each pixel region; integrating the marked binary image and the physical verification conclusion, and when the quantum anomaly probability value reaches the alarm standard and passes the physical verification, outputting an anomaly alarm signal; and the abnormal alarm signal is converted into a confrontation training sample, a cross-scene virtual sample is generated through quantum noise injection, and an abnormal detection operator is dynamically updated. According to the method, the Hilbert space quantum state evolution step is combined, unitary transformation is applied to the quantum state bit vector, the orthogonal projection operation is executed, the accurately quantified abnormal probability distribution matrix is generated, and accurate assessment of the abnormal risk is achieved.

The invention discloses an optical fiber signal transmission system and method based on quantum noise encryption, and relates to the technical field of optical fiber communication, and the system comprises a composite modulation transmitting module, a dispersion compensation relay module, a coherent receiving module and a digital signal processor. The composite modulation transmitting module comprises an electro-optical modulator and a quantum noise randomization encoder; the dispersion compensation relay module comprises an adjustable dispersion compensator and a Raman amplifier; the coherent receiving module comprises a local oscillator laser and a 90-degree optical mixer; a digital signal processor includes a clock recovery unit and a maximum likelihood sequence detector. All the modules are sequentially connected and cooperatively work. And the adjustable dispersion compensator dynamically applies reverse dispersion compensation calculated based on a dispersion coefficient and a transmission distance according to the dispersion amount monitored in real time. According to the invention, through technologies of quantum noise encryption, dynamic dispersion compensation, Raman amplification, coherent reception and the like, safe and efficient transmission with single-wave 400Gbps and 100km transmission bit error rate less than or equal to 1 * 10 <-12 > is realized.

The invention provides an urban rail transit communication informatization monitoring device which comprises a rail health monitoring module which combines acoustic CT scanning and electromagnetic eddy current detection to generate a steel rail three-dimensional defect image and obtain rail defect data. The electromagnetic environment sensing and monitoring module extracts quantum noise features, establishes an electromagnetic field-signal system coupling model, and predicts interference of quantum noise on the CBTC system. And the communication signal quality monitoring module monitors signal strength abnormity by using a wireless spectrum analysis algorithm. And the data processing center fuses and analyzes various data and generates a monitoring report. And the visualization module displays the report. The integration technology improves the accuracy and reliability of track defect detection, and enhances the support of track maintenance data. The electromagnetic environment sensing and monitoring module improves the anti-interference capability of the communication system. The communication signal quality monitoring improves the monitoring precision and signal integrity verification, and reduces the false alarm rate.

The application relates to the technical field of quantum precision measurement, and discloses an integrated wide-temperature-range diamond nitrogen vacancy color center quantum noise spectrometer, which comprises an integrated optical path module arranged outside a low-temperature constant temperature module, an electronic module, an integrated laser module and a data processing module; the integrated optical path module is connected with the electronic module and the integrated laser module through an optical fiber and is spatially coupled with the low-temperature constant temperature module; the electronic module comprises a double-path chip-level signal generation path; a microwave antenna and a probe are arranged in the low-temperature module; by mechanically decoupling the integrated optical path module and the low-temperature module, vibration interference caused by the refrigeration process is effectively blocked, a laminated near-field coupling structure and an integrated control circuit are matched, high-stability in-situ quantum sensing under a wide-temperature-range environment is realized, the integration degree and the measurement signal-to-noise ratio of the system are improved, and the overall volume and the manufacturing cost of the whole machine are reduced.

A light emitting device and method thereof, and a gas analysis system and method thereof, are disclosed. The light emitting device includes: an optical comb light source configured to generate an initial light signal; an encoding module configured to encode the initial light signal based on a preset comb code to form a light signal to be processed; and a modulation module configured to perform quantum noise compression on the light signal to be processed to form an emitted light signal. This invention belongs to the field of precision measurement. Through a collaborative architecture of "compressed optical comb + computational encoding," optical comb spectroscopy technology achieves improvements in multiple dimensions, including sensitivity, environmental adaptability, speed, and system complexity.

This invention discloses a method and device for detecting the load at the charging port of an electric vehicle charging pile, relating to the field of charging safety technology. The method includes: acquiring an electrical signal from the charging port; extracting a clean load response signal using a quantum noise-resistant processor based on Majorana fermion operators; inputting the clean load response signal into a pulse neural network autoencoder to generate a neural pulse sequence through a pulse firing mechanism; performing time-frequency domain transformation on the neural pulse sequence to reconstruct a complex impedance tensor, and solving the eigenvalue sequence of the complex impedance tensor; embedding the eigenvalue sequence into a five-dimensional anti-de Sitter space boundary based on the AdS / CFT duality principle, and generating a three-dimensional holographic tomographic map by solving the Einstein field equations relating the volume to the boundary; this invention achieves topological separation of noise and load signal through a Majorana zero-mode waveguide channel, solving the problem of insufficient high-frequency noise suppression in dynamic load scenarios.

According to the data processing device and method based on the controllable quantum noise source and the hash function, by means of controllability of the quantum noise source and adjustable parameters of the hash function, data processing safety can be improved, and flexibility and adaptability of a system can be enhanced. By controlling the quality of the quantum noise source, the randomness of the quantum noise source can be improved, and the stability of the quantum entropy of the quantum noise source can be maintained, so that the randomness of the system is improved, and the stability of the quantum proportion is ensured. By means of the hash function with the control parameters and the control parameter dynamic adjustment scheme thereof, the control parameters of the hash function not only can be preset, but also can be dynamically adjusted according to actual scene requirements, a more flexible and customized data processing scheme is provided, and the flexibility of the system is greatly improved.

The present application relates to the field of spectral analysis, and relates to an absorption spectrometer and a direct measurement method of absorption light intensity. The present application provides an absorption spectrometer which can directly measure absorption light intensity. The absorption spectrometer comprises a light source assembly, a sample cell, a semi-transparent mirror and a light detector. The absorption spectrometer also provides a direct measurement method of absorption light intensity. In the front light path of two coherent lights, a same sample cell is placed in each light path. The optical path of one light is adjusted until the output of the light detector included in the absorption spectrometer is minimum. Then, a sample to be measured is added to one sample cell, and a blank solution is added to the other sample cell. At this time, the light detector measures the intensity of the remaining light which is not completely cancelled after the convergence of the two lights, i.e. the intensity of the light absorbed by the sample to be measured, i.e. the absorption light intensity. The absorption spectrometer provided by the present application detects absorption light intensity, while the traditional absorption spectrometer detects absorbance. Changing the detection of absorbance to the detection of absorption light intensity can avoid the quantum noise of a large signal from drowning out a weak signal, thereby greatly improving the detection sensitivity of the absorption spectrometer.

The application relates to a method, device and equipment for anti-deepfake speech based on quantum resonance peak disturbance, wherein the method comprises the following steps: reading an original speech signal, extracting a fundamental frequency and a formant frequency of the original speech signal; creating a parameterized quantum circuit to generate quantum noise; adding the quantum noise to the extracted fundamental frequency and formant frequency to obtain a disturbed signal; and preprocessing the disturbed signal to obtain a reconstructed speech signal. The optimized quantum noise generated by the quantum neural network can effectively interfere with the learning and generation of speech features by a deepfake model. Through the design of a loss function and the adjustment of an optimization algorithm, the speech after adding the noise is ensured to have the smallest difference in hearing from the original speech.

The present application discloses a multi-channel output quantum random number generation device and a multi-channel output quantum random number generation method. The multi-channel output quantum random number generation device includes a laser light source, a cascaded beam splitter module, a first homodyne detector, a second homodyne detector, a first signal processing module, a second signal processing module, and a control module. The technical solution of the present application obtains two optical signals with the same randomness at the entropy source level through optical path design, and obtains quantum noise by separately detecting these two optical signals and converts them into the same quantum random numbers. The whole process does not require the copying of electronic data, retains the true randomness of the two entropy sources, and reduces the risk of data being stolen and tampered with.

[Problem] To provide an optical secure communication system with higher safety by carrying a QNSC signal using a coherent Hermite-Gaussian pulse, multiplexing the QNSC signal using coherent Hermite-Gaussian pulses of different orders, and adding a masking effect in a time domain. [Solution] An optical secure communication system for a quantum noise stream cipher (QNSC) signal for masking the phase and / or the amplitude level of an optical signal using quantum noise, wherein carrier light in a transmission unit and locally oscillated light in a reception unit of the QNSC signal comprise a coherent Hermite-Gaussian pulse with an amplitude given by an Hermite-Gaussian function.

This application provides a rubidium optically pumped magnetometer and its measurement method, belonging to the field of magnetometer technology. The entangled photon component includes a first laser and a nonlinear optical crystal, the nonlinear optical crystal being used to convert photons emitted by the first laser into entangled photon pairs; a rubidium atom gas cell for receiving the entangled photon pairs; a laser cooling system for cooling rubidium atoms to a Bose-Einstein condensate; and an interferometer phase detection system including a second laser, a first beam splitter, a beam combiner, and a signal processor. This application introduces entangled photons to form a quantum entangled state with rubidium atoms. The introduced entangled photons, through coupling with the rubidium atom system, form an enhanced quantum interference effect. Traditional rubidium optically pumped magnetometers are limited in measurement accuracy by quantum noise, but by introducing entangled photons, the system's measurement noise is reduced, thereby achieving higher measurement accuracy.

A system to secure digital in-transit communication is disclosed. It includes true random bits generation, a secure digital key distribution and an encryption system for broad use. It offers post quantum-resistant characteristics. The system uses true random bits generated from vacuum quantum fluctuations. The distribution of these bits is protected by recorded quantum noise and works in standard communication channels.

According to the high-signal-quality physical layer encrypted free space optical communication method and system provided by the invention, quantization noise can be effectively controlled through DSM modulation, high-frequency noise is removed, so that high quality and low distortion of signals are kept in the transmission process, and especially in long-distance and severe-environment communication, the high-quality and low-distortion performance of the signals is ensured. And the signal stability can be obviously improved. Wherein in the physical layer encryption process of quantum noise stream encryption and the like, quantum noise or random phase jump is used as a means for generating an encrypted signal to introduce certain noise, the noise shaping characteristic of DSM modulation plays an important role, the noise is concentrated in a high-frequency area to reduce low-frequency interference caused by the quantum noise, and the quantum noise stream encryption is realized. The signal quality is optimized, and the bit error rate is reduced. Interference caused by quantum noise and external environment factors can be effectively eliminated in the signal transmission process, and therefore the transmission stability of a system and the reliability of signals are improved.

The invention discloses a multi-channel quantum noise stream encryption system and method, and relates to the technical field of quantum secret communication. The system comprises a transmitting end signal generation modulation module, a 1 * P beam splitter and P (P is greater than or equal to 2) receiving end signal detection modules. After a target binary sequence obtained after spectrum spreading and quantum noise stream encryption are carried out on a plurality of initial binary sequences is obtained, a sending end signal generation modulation module can carry out IQ modulation on the target binary sequence, a composite optical signal is generated, and the composite optical signal is transmitted to a 1 * P beam splitter; after receiving the composite optical signal, the 1 * P beam splitter can distribute the composite optical signal to P receiving end signal detection modules; each receiving end signal detection module can perform coherent detection on the received composite optical signal to obtain a beat frequency signal; and the beat frequency signal is decrypted to obtain information in the initial binary sequence.

The invention discloses a method for calibrating projection parameters of an X-ray machine, and relates to the technical field of medical image and diagnostic equipment. A dual-channel feature extraction module dynamically shields high-noise region response in a spatial dimension, and meanwhile, key anatomical structure features are reserved by using a channel gain mechanism, so that interference of quantum noise on edge positioning is effectively suppressed; a generative adversarial framework converts parameter regression into an optimization task driven by reconstruction quality, a discriminator forces a generator to output offset conforming to a physical projection rule based on structural similarity constraints of pre-training depth features, and the bottleneck that an optimization algorithm falls into a local extremum under low signal-to-noise ratio data is broken; triple constraint terms in the loss function balance parameter precision and image authenticity through a weight adaptive mechanism, geometric parameters are quickly converged in the early stage of training, texture consistency is enhanced in the middle and later stages, and artifact distortion caused by insufficient dosage is reduced.

The application discloses a dynamic transmission method and device based on quantum-like noise flow coding, and the method comprises the following steps: generating a chaotic sequence by using a 4D hyperchaotic model according to an initial key; introducing the initial key into error bits, dividing the error bits into two different matrices, and then performing upsampling to obtain a real part B I and an imaginary part B Q of a key stream; performing serial-parallel conversion on original data, and performing exclusive or processing on data real parts and data imaginary parts by using a binary chaotic sequence to obtain data stream real parts E I and data stream imaginary parts E Q ; performing quantum-like noise flow encryption processing on the data stream real parts E I , the data stream imaginary parts E Q , the real part B I of the key stream and the imaginary part B Q of the key stream to obtain a quantum-like noise flow encryption signal; performing scrambling on subcarriers and symbol points of the quantum-like noise flow encryption signal by using a chaotic sequence to obtain a scrambled signal; and performing OFDM modulation on the scrambled signal and then transmitting the scrambled signal in an optical fiber channel.

The present invention provides a quantum noise compression type laser gyroscope. The laser gyroscope includes a microcrystalline glass cavity, a cavity length adjustment mechanism, a mechanical dither wheel, an output mirror, and a reflecting mirror. A mirror mounting surface and a cavity length adjustment mechanism mounting surface are provided on the side surface of the microcrystalline glass cavity. The reflecting mirror and the output mirror are respectively arranged on the mirror mounting surface, and the cavity length adjustment mechanism is arranged on the cavity length adjustment mechanism mounting surface. The microcrystalline glass cavity is supported on the mechanical dither wheel through a dither wheel mounting hole. The inner cavity of the microcrystalline glass cavity is a resonant cavity, and multiple layers of annular optical paths are formed in the resonant cavity. The quantum noise compression type laser gyroscope proposed by the present invention can multiply the optical path length with only a small increase in the thickness and weight of the laser gyroscope, and at the same time increase the optical flux, thereby improving the ultimate accuracy of the laser gyroscope.

The invention relates to the technical field of quantum noise measurement, in particular to a method for quickly calculating quantum noise in a microcavity soliton optical frequency comb. The method comprises the following steps: establishing a dynamic stability analysis model of solitons in a microcavity system, and solving a steady-state solution; identifying stability characteristics of the steady-state soliton solution in the disturbance space based on the solved steady-state solution; constructing a noise physical model of solitons in the micro-cavity system, wherein the noise physical model is used for evaluating the noise performance of a single soliton micro-comb; calculating the power spectrum density based on the solved steady-state solution and the noise performance of the single soliton micro comb; and solving the noise of the quantum in the soliton optical frequency comb in the microcavity system. According to the method, modeling is carried out on a timing jitter mechanism caused by quantum noise, and a time domain nonlinear coupling system is mapped to a modal feature space. The solution carried out in the feature domain not only improves the calculation precision, but also enhances the numerical stability and rapid convergence capability of the algorithm.

The invention discloses a communication system, and relates to the technical field of secret communication. The communication system comprises a signal generation modulation module and a signal detection demodulation module which are in communication connection. A signal generation modulation module is used for splitting an initial optical signal into first polarized light and second polarized light which are orthogonally polarized; generating a composite optical signal based on the first polarized light, the second polarized light, the randomly distributed binary sequence signal, the multi-system sequence signal obeying Gaussian distribution, the quantum noise stream encryption operation, the carrier wave of the first frequency and the carrier wave of the second frequency; performing power attenuation on the composite optical signal, and outputting a target optical signal; and the target optical signal is sent to the signal detection demodulation module. A signal detection demodulation module in the application is used for receiving a target optical signal; generating two groups of beat frequency electric signals based on the local oscillation optical signal and the target optical signal; and processing the two groups of beat frequency electric signals to generate binary sequence signals and multi-system sequence signals.

The invention discloses a three-phase motor fault diagnosis method and system based on FPGA heterogeneous control, and relates to the field of motor fault diagnosis, and the method comprises the steps: collecting a current signal, a vibration signal and a temperature signal of a three-phase motor, and carrying out the preprocessing of the current signal, the vibration signal and the temperature signal; inputting the preprocessed current signal into a quantum stochastic resonance unit in the FPGA, injecting controllable quantum noise by dynamically adjusting bistable parameters, enhancing weak fault features, and obtaining an enhanced current signal; and carrying out fast Fourier transform on the enhanced current signal to extract a harmonic characteristic so as to obtain a current harmonic characteristic, and carrying out wavelet packet decomposition on the preprocessed vibration signal to extract frequency band energy. According to the invention, the quantum stochastic resonance unit realized by the FPGA dynamically adjusts bistable parameters and injects controllable noise, and the stochastic resonance effect of the nonlinear unit is utilized to effectively improve the extraction capability of weak fault features in a strong noise environment.

The present application discloses a symbol synchronization and frequency offset estimation method and system for a quantum noise flow encryption system. The method includes: generating a conjugate symmetric sequence U based on a PN sequence, and generating a conjugate antisymmetric training sequence based on U; the sending end encrypts the training sequence using a pre-shared key, adds the encrypted training sequence to a data frame, the receiving end receives a data signal including the encrypted training sequence, and restores the sequence signals in the training sequence positions corresponding to different data positions based on the key; calculating the autocorrelation values and timing metric values of the corresponding restored sequences based on different strategies; taking the mean of the timing metric values of different strategies to obtain a comprehensive timing metric value, performing symbol synchronization of the quantum noise flow encryption system based on the comprehensive timing metric value, and performing frequency offset estimation based on the autocorrelation values at the symbol synchronization positions. The present application can improve the symbol synchronization accuracy and frequency offset estimation accuracy in the quantum noise flow encryption system, and improve the security of symbol frequency synchronization.

A receiver for a quantum signal comprising a mixer for mixing or interfering a local oscillator signal and the quantum signal to form interference signals; and a pair of balanced photodetectors for outputting a difference signal in response thereto. The receiver further comprises electronics for amplifying and determining a quadrature component of the quantum signal from the difference signal with quantum noise limited precision. Methods and systems for using the receiver are further disclosed.

The application discloses a data sending and receiving method, device and storage medium, which comprises the following steps: performing forward error correction coding on data; performing probability shaping on bases; multiplying the probability-shaped bases as amplitudes and the FEC-corrected data as + / symbols; and sending the multiplied bases and data. The bases are subjected to probability shaping; the probability-shaped bases are multiplied as amplitudes and the received probability-shaped bases and data are multiplied as + / symbols; and the multiplied bases and data before FEC correction are obtained, and the data is obtained through FEC forward error correction. According to the application, the frequency of using constellation symbol points of a quantum noise stream encryption system can be changed, the quantum noise can be better overlapped with symbols, and the secrecy of keys and bases is improved.

The application discloses a kind of ultra-low phase noise microwave signal generation method and system based on electro-optical comb.The method is: 1) two wavelength continuous tunable lasers are locked in the same FP cavity through two links with different modulation frequencies to realize the dual-wavelength laser with frequency interval (v2-v1);2) use residual amplitude modulation noise control technology to suppress the electronic noise of each link to the quantum noise limit;3) the laser with center frequency v1 and v2 is coupled as an input to electro-optical frequency comb generator, to generate two sets of electro-optical frequency comb with spectral overlap;4) obtain the beat signal of two electro-optical frequency combs;The reference signal from the reference signal source is input into the phase detector for phase detection;The output signal of the phase detector is sent to the proportional-integral-derivative control circuit;5) use the output feedback control of proportional-integral-derivative control circuit to control the phase noise of radio frequency source, to obtain ultra-low phase noise microwave signal.

The invention discloses a signal transmission method based on three-dimensional constellation step coding, and the method comprises the steps: carrying out the XOR encryption and sub-block scrambling of initial signal data, and generating a 64QAM (Quadrature Amplitude Modulation) signal; after up-sampling, actively introducing an error sequence to generate a state base; signal step coding is carried out through a quasi-quantum noise flow method, and information hiding of 64QAM signals is achieved; the ultra-high-order signal is scrambled and encrypted and then enters an optical fiber channel after passing through an OFDM system, and a received signal is obtained; and demodulating the state base, regenerating a scrambling sequence, performing chaos scrambling recovery after recovery decryption, reducing the order of the signal to a 64QAM signal in a three-dimensional space, and performing XOR recovery to obtain initial data. According to the invention, 64QAM is designed in a three-dimensional space, the secret key is used as a state base to realize accompanying transmission, the safety performance of the signal is further improved in combination with a chaotic system, and finally, high-performance and high-safety signal transmission is realized.

The application discloses an X-ray machine projection parameter calibration method and relates to the technical field of medical image and diagnosis equipment. A double-channel feature extraction module shields a high-noise area response in a spatial dimension dynamically, meanwhile, a channel gain mechanism is utilized to retain key anatomical structure features, and quantum noise interference on edge positioning is effectively inhibited. A generative adversarial framework converts parameter regression into an optimization task driven by reconstruction quality, a discriminator is based on a structural similarity constraint of a pre-trained deep feature, and a generator is forced to output an offset meeting a physical projection rule, thus breaking a bottleneck that an optimization algorithm falls into a local extreme value under low signal-to-noise ratio data. Triple constraint terms in a loss function balance parameter precision and image authenticity through a weight self-adaptive mechanism, geometric parameters are converged quickly in an early training stage, texture consistency is strengthened in a middle and late training stage, and artifact distortion caused by insufficient dose is reduced.

The invention provides a rubidium optical pump magnetometer and a measuring method thereof, and belongs to the technical field of magnetometers, an entangled photon assembly comprises a first laser and a nonlinear optical crystal, and the nonlinear optical crystal is used for converting photons emitted by the first laser into entangled photon pairs; the rubidium atom gas chamber is used for receiving entangled photon pairs; the laser cooling system is used for cooling rubidium atoms to a Bose-Einstein condensed state; the interferometer phase detection system comprises a second laser, a first beam splitter, a beam combiner and a signal processor. According to the method, entangled photons and rubidium atoms are introduced to form a quantum entangled state, and the introduced entangled photons are coupled with a rubidium atom system to form an enhanced quantum interference effect. The measurement precision of a traditional rubidium optical pump magnetometer is restricted by quantum noise, and the measurement noise of a system is reduced by introducing entangled photons, so that higher measurement precision is realized.