43 results about "Quantum detection" patented technology

The invention relates to the technical field of water quality pollution detection, in particular to a water quality pollution rapid detection method driven by a quantum sensing technology. A quantum sensor array is deployed in a water area to be detected, and quantum signal response data of the water area is collected; constructing a pollutant quantum recognition model, and inputting quantum signal response data into the model to obtain an initial predicted value of pollutant concentration; generating an initial detection parameter of the quantum detection instrument based on the initial predicted value, executing primary pollution detection by the instrument according to the parameter, and collecting primary deviation data of an actual detection value and an expected detection value; determining a detection error according to the deviation data, further correcting the initial detection parameter, and generating an optimized detection parameter; and finally, the instrument performs secondary pollution detection based on the optimized detection parameters. According to the method, complex water sample pretreatment is not needed, water quality pollution detection can be rapidly and accurately completed, detection requirements of different water areas are met, and the detection efficiency and accuracy are improved.

The invention relates to the technical field of mining exploration, and discloses a surface mine mining system and method based on a three-dimensional model, and the system comprises a three-dimensional modeling module which is used for fusing earth surface and deep geological data to construct a dynamic digital twinborn body, receiving environment dynamic sensing data, and calculating rock mass stress and a water flow coupling field in real time; the mining planning module is used for generating a mining step design and equipment scheduling instruction based on the lithologic parameters and stress distribution of the dynamic digital twin; the equipment control module is used for converting the equipment dispatching instruction into centimeter-level action control signals of a mine truck and an electric shovel through a low-delay communication chain; and the monitoring feedback module is used for collecting mining surface deformation and muck pile characteristic data. Through the dynamic digital twinborn body fusing earth surface centimeter-level scanning and deep quantum detection and stress and water flow coupling field real-time calculation, synchronous visualization of the rock mass mechanical state and hydrological response is achieved, full-time-domain geological perspective capacity is provided for mining decision, and mining efficiency is improved.

The invention relates to the technical field of power equipment, and discloses a high-voltage cable partial discharge detection device and an installation method, and the high-voltage cable partial discharge detection device comprises a housing, a quantum detection module, a radio frequency signal module, an optical signal module, a photoelectric conversion element, a signal analysis and processing module, and a control module. And the quantum detection module comprises a diamond which is arranged between the shell and the high-voltage cable and contains an NV color center. The radio-frequency signal module comprises a radio-frequency signal transmitting assembly, a radio-frequency signal receiving element and a radio-frequency signal transmission cable, and the radio-frequency signal receiving element is arranged on the shell. The optical signal module comprises a laser signal transmitting assembly, a first optical fiber, an optical fiber coupler and a condensing lens. The first optical fiber is connected with the photoelectric conversion element, and the photoelectric conversion element is electrically connected with the signal analyzing and processing module. According to the high-voltage cable partial discharge detection device, partial discharge detection of the high-voltage cable can be realized, and injury of high-voltage current to operators is avoided.

The invention relates to the technical field of power equipment operation and maintenance, and discloses a power equipment vibration defect identification method and system. Dynamically adjusting an acoustic vortex field orbital angular momentum mode corresponding to the target power equipment through a preset programmable metasurface array, and obtaining a resonance response signal of the equipment; carrying out compressed state laser irradiation and balanced zero beat detection on the resonance response signal to obtain a quantum correlation factor time sequence; reconstructing a resonance response signal phase space based on the quantum correlation factor time sequence, and calculating to obtain a correlation dimension and a maximum Lyapunov index; and performing defect identification based on the correlation dimension, the maximum Lyapunov index and a preset threshold to obtain defect identification data of the power equipment. According to the method, dynamic sound field excitation and quantum detection are combined, the vibration defects of the power equipment are recognized, and the technical problem that the recognition precision is low due to the fact that a sensor is high in measuring point dependence, low in environmental noise anti-interference capacity and insufficient in fault feature extraction in a traditional method is solved.

The invention discloses a current dipole-based magnetic impurity simulation method, device and system, belongs to the technical field of nondestructive testing, and solves the problem of how to improve the magnetic impurity simulation precision. Comprising the steps of inputting simulation parameters of target magnetic impurity particles, calculating target driving current, introducing a medium correction coefficient to perform reverse correction on the target driving current, and solving actual driving current; actual driving current is applied to the current dipole array of the selected level, and a simulated magnetic field is generated; an analog magnetic field signal is extracted based on a phase-locked amplification technology and is used for magnetic field signal inversion verification or sensitivity calibration. According to the method, the magnetic moment generated by the current dipole is equivalent to the excitation moment of the magnetic impurities, the medium correction coefficient k is introduced to carry out reverse correction on the target driving current, the actual driving current is solved, and the magnitude mapping relation from the magnetic impurity particle parameters to the actual driving current is established; and the accuracy and reliability of sensitivity calibration of the quantum detection equipment are improved.

The invention discloses a traveling wave microwave light quantum detection method and system and a superconducting quantum circuit, and the method comprises the steps: building a three-level dimer coupled wQED system model; based on the system model, obtaining an equation set containing the input and output relation of the system model and a photon detection efficiency expression; acquiring a key parameter group based on the equation set and the photon detection efficiency expression; and adjusting the structure and the coupling relationship of the system model according to the key parameter group, and realizing traveling wave microwave light quantum detection based on the adjusted system model. In the invention, the brand-new three-level dimer coupled wQED system model is provided, and the structure and the coupling relationship are adjusted under the condition of reasonably setting a key parameter group, so that large-bandwidth high-efficiency detection is realized in principle by using the number of atoms which is far less than that of atoms in a traditional scheme; the physical resources are greatly saved, and the complexity of the system is simplified.

This application relates to the field of quantum nondestructive testing technology, and discloses a quantum detection device and a xenon atom-based eddy current detection method. The quantum detection device includes an interconnected eddy current probe and a quantum measurement device. The quantum measurement device includes a xenon atom gas chamber for measuring the magnetic field strength of a target eddy current magnetic field. It acquires the target eddy current magnetic field of the target object, measures the magnetic field strength of the target eddy current magnetic field, and obtains the magnetic field strength distribution along the surface of the target object. Based on the magnetic field strength distribution, it detects thickness changes in the target object to obtain the weak point detection result. Its beneficial effect is that by measuring the eddy current magnetic field generated by the target object through a xenon atom gas chamber, it effectively utilizes the characteristics of xenon atoms—long coherence time and extremely low resonance frequency—thereby maintaining high sensitivity to capture weak magnetic fields at extremely low frequencies and obtaining a detection penetration depth far exceeding that of traditional sensors, achieving high-precision nondestructive testing of minute thickness differences inside the target object.

The application discloses a crude oil water content analysis method and device. The method comprises the following steps: obtaining low, medium and high energy level light quantum detection data of a penetrating crude oil sample; calculating photoelectric effect cross section coefficients of low and medium energy levels, simultaneously solving oil, gas and water phase fractions and calculating a first mixed density; combining Compton reaction cross section coefficient of high energy level data to calculate a second mixed density; comparing the deviation of the two mixed densities, if the deviation is greater than a preset threshold, the detection time is automatically extended for re-measurement; if the deviation is still greater than the preset threshold, it is determined that the sample is in a gas-containing or non-full-liquid state, the high energy level calculation result is actively removed, and only the low and medium energy level data are used to solve the phase fraction and normalized output the final water content. The application innovatively introduces a density deviation check and a dynamic delay mechanism, effectively distinguishes and separates the gas phase interference, and realizes non-contact and high-precision automatic water content detection.

The application relates to the technical field of spectral analysis, and discloses a fluorescence spectral analysis device and method based on a solid-state electron spin ensemble, wherein the spectral analysis device comprises a laser modulation unit, a confocal unit and a fluorescence processing unit; the laser modulation unit comprises a laser, a Griesinger-Taylor prism, an acousto-optic modulator, a beam expander, a collimating lens, a spatial light modulator, a spatial filter and a half-wave plate which are sequentially arranged; the confocal unit comprises a dichroic mirror, a focusing lens, a diamond and a microwave antenna which are sequentially arranged; the diamond has a solid-state electron spin NV color center; and the fluorescence processing unit comprises a filter group, a sleeve lens, a lens, a linear polarizer, a Bertin lens and a camera which are sequentially arranged. The application distinguishes the fluorescence generated by different axial NV color centers from the fluorescence level, and provides a thought and method for the miniaturization and bias magnetic field removal of a quantum detection device of the NV color center.

A microwave quantum detection method based on environmental noise fine perception comprises the following steps: step 1, constructing a parallel link of environmental noise perception and signal detection, adding an antenna and a low-temperature switch at the front ends of the environmental noise perception link and the signal detection link, connecting the two links in parallel, and switching between the environmental noise perception and the signal detection; step 2, acquiring environment noise distribution by using an environment noise sensing link: operating a low-temperature switch, selecting the environment noise sensing link, testing internal noise of the environment noise sensing link by adopting a cold and hot load method, and measuring external environment noise by using the environment noise sensing link; and step 3, pointing to a target orientation by using a signal detection link, and performing signal detection: operating a low-temperature switch, selecting the signal detection link, determining an antenna pointing angle, obtaining environment noise of the angle, setting attenuation of an adjustable attenuator according to the external environment noise, and detecting signals by using a microwave quantum detection device.

An entanglement-assisted multistatic quantum radar detection technique employs the integrated entangled source shared among multiple transmitters and performing transmit side optical phase conjugation. EA receivers are based on classical homodyne detection schemes. The EA multistatic radar detection technique is evaluated against bistatic radar EA detection scheme and various coherent states-based quantum detection schemes (the optimum quantum detector. Helstrom threshold detector, and random phase optimum quantum detector). The EA multistatic target detection probability is significantly better than that of corresponding bistatic radar EA detection techniques. coherent states-based quantum detection techniques. and the classical radar detection schemes. When both scattered signal photon channels and idler channels are noisy and lossy, the scheme significantly outperforms the EA bistatic radar scheme.

The application discloses a method for measuring position of a point light source by using spatial mode decomposition multiplexing, and the principle of the method is based on orthogonal projection measurement in quantum detection theory. The method converts direct measurement of distribution of light intensity of the point light source in a coordinate space into measurement of weights of each Hermite-Gaussian mode. In the specific operation, only the complex conjugate of the complex amplitude of each Hermite-Gaussian mode needs to be encoded into a computer hologram. By replacing different computer holograms, the photon number at the optical axis of the first-order diffraction light is recorded, and then the weights of the to-be-measured light field in each Hermite-Gaussian mode can be obtained after normalization. Compared with the traditional measurement, only one pixel is needed to achieve optimal measurement.

A detector can include a group of orthogonally oriented quantum detectors, wherein each quantum detector among the group of orthogonally oriented quantum detectors can detect variations in a quantum field. The detector can further include a signal processor that can determine a direction and magnitude of the detected quantum field variations based on outputs from the group of orthogonally oriented quantum detectors. Each quantum detector among the group of orthogonally oriented quantum detectors can include an array of Zener diodes biased to produce shot noise modulated by quantum field variations. The detector can constitute a three-dimensional quantum field detector. In some embodiments, a tunneling sensor comprising a tunneling capacitor may be implemented in place of Zener diode.

The invention discloses a method for detecting tea saponin in tea seed meal, and relates to the technical field of quantum detection.The method comprises the steps that a tea seed meal raw material is subjected to degreasing treatment through a cosolvent of supercritical carbon dioxide and ethyl lactate, and degreased dry powder is obtained; constructing a variable component sub-tensor network, inputting the spectral signal data into the variable component sub-tensor network for analysis, and outputting a tea saponin characteristic peak intensity value through frequency band sensitive layered tensor decomposition in combination with predefined frequency band segmentation and a fixed rank compression strategy; and establishing a two-channel calibration curve according to the tea saponin characteristic peak intensity value and a tea saponin standard substance, and calculating a quantitative detection result of the tea saponin in the tea seed meal. According to the method, a frequency band sensitive layered tensor decomposition mechanism is constructed, a variable component sub-tensor network analyzes a spectral signal into a frequency band quantum state set, nonlinear compression is realized by using a frequency band entanglement Hamiltonian, and the signal-to-noise ratio of a characteristic peak is enhanced.

The invention provides a high-efficiency quantum detection device and method based on an area array detector, and is applied to the technical field of quantum light detection. A single-path photon signal is guided to a detection area through an optical coupling unit, and an array detection unit realizes multi-path parallel detection; and the signal synchronization processing unit performs independent delay adjustment and synthesis on multiple paths of electric signals, so that the technical problems of non-uniform spatial distribution of single-path photon signals, difficulty in multi-pixel electric signal management synchronization, signal distortion caused by response time difference and the like are effectively solved. The device has the advantages that the problems of spatial distribution of single-path photon signals, management synchronization of multi-pixel electric signals, response time difference compensation and the like are effectively solved, and the overall detection efficiency and the time resolution are remarkably improved.

The application provides a real-time entropy evaluation post-processing quantum random number generation method. The quality of random numbers determines the privacy and security of a communication system. Quantum detection is inevitable in the quantum random number generation process, which will introduce side information. Therefore, the quantum noise entropy content of the system must be strictly evaluated, and the random numbers must be post-processed by using a security information theory extractor. The application proposes to reconstruct the quantum state phase space distribution in real time in a continuous variable quantum random number generation scheme and measure the deviation from the ideal value. If the deviation reaches the rejudgment threshold, the entropy evaluation is updated in real time, so as to adjust the size of the post-processing matrix in real time. The seed used to construct the random extractor is also updated in real time. On this basis, the information theory security generalized hash post-processing of multiple quantum random numbers is realized in parallel. The application provides a cost-intensive and expandable random number real-time entropy evaluation post-processing scheme, which can effectively improve the actual security and practicability of the quantum random number generator.

The application discloses a kind of travelling wave microwave light quantum detection method, system and a superconducting quantum circuit, wherein the travelling wave microwave light quantum detection method includes: establishing three-level dimer coupling wQED system model;Based on system model, obtain the equation set containing system model input-output relationship and photon detection efficiency expression;Based on equation set and photon detection efficiency expression, obtain key parameter group;According to key parameter group, adjust the structure and coupling relationship of system model, realize the detection of travelling wave microwave light quantum based on adjusted system model.In the present application, this kind of brand-new three-level dimer coupling wQED system model is proposed, under the condition of reasonable setting key parameter group, adjust its structure and coupling relationship, and then realize high-efficiency detection with far less than the number of atoms of traditional scheme in principle to realize large bandwidth, greatly save physical resources, simplify the complexity of system.

The invention relates to the field of spinning. The preparation method of the biological information science and technology fiber is characterized by comprising the following steps: step 1, capturing a specific quantum spin field beneficial to human health by using a quantum detection instrument to obtain biological information; 2, storing and outputting biological information by using quantum technology, and loading the biological information on a sub-micron microchip made of a silicon-titanium material to obtain the sub-micron microchip for storing the biological information; and step 3, blending the sub-micron microchip storing the biological information with the polyester fiber slices, and preparing the biological information technology fiber by adopting a melt spinning technology. The prepared biological information technology fiber helps to improve sleep quality.

This invention relates to a velocity measurement device based on the transient electromagnetic induction transparency effect. It utilizes two probe beams and two coupling beams to excite atoms in an atomic antenna to the Rydberg state. The probe beams are modulated into pulsed lasers to obtain the transient electromagnetic induction transparency signal of the Rydberg atoms. A first radio frequency signal source radiates electromagnetic waves to illuminate the target object; the reflected electromagnetic waves and the local oscillator electromagnetic waves radiated by a second radio frequency signal source simultaneously act on the Rydberg atoms at near-resonance. The velocity of the target object is measured by quantum precision measurement of the difference frequency signal generated by the interference of the two electromagnetic waves. Compared to traditional Rydberg atomic antennas, this invention's velocity measurement device based on the transient electromagnetic induction transparency effect can achieve velocity measurement of moving targets based on ultra-wideband, miniaturized quantum detection, thus expanding the functionality of Rydberg atomic antennas.

The present application relates to the technical field of water quality pollution detection, and particularly relates to a water quality pollution rapid detection method driven by quantum sensing technology. The present application deploys a quantum sensor array in a water area to be detected to collect quantum signal response data of the water area; a pollutant quantum recognition model is constructed, the quantum signal response data is input into the model to obtain an initial prediction value of pollutant concentration; initial detection parameters of a quantum detector are generated based on the initial prediction value, the detector performs initial pollution detection according to the parameters, and first deviation data of actual detection values and expected detection values is collected; the detection error is determined according to the deviation data, and then the initial detection parameters are corrected to generate optimized detection parameters; finally, the detector performs secondary pollution detection based on the optimized detection parameters. The method can quickly and accurately complete water quality pollution detection without complex water sample pretreatment, is suitable for different water area detection requirements, and improves detection efficiency and accuracy.

The invention discloses an air connection hybrid transmission method, device and equipment based on a private cloud quantum link, a medium and a product. Comprising the following steps: sending a quantum detection message containing a quantum entanglement pair to a private cloud transmission chain network, and determining a target quantum transmission link according to a feedback result of the quantum detection message; detecting a transmission quality parameter of the target quantum transmission link, and if the transmission quality parameter meets a preset data transmission requirement, constraining a transmission time parameter of the target quantum transmission link; if the transmission quality parameter does not meet the preset data transmission requirement, determining a target quantum route of an idle link in the private cloud transmission chain network; and transmitting the to-be-transmitted data through the target quantum transmission link or the target quantum route by adopting an air-connection hybrid transmission mode combining a classical channel and quantum transmission. According to the technical scheme, the private cloud data transmission stability and continuity are improved, the data security is guaranteed, the end-to-end delay is reduced, and the transmission efficiency is improved.

The invention relates to the technical field of quantum information, and discloses a quantum entangled photon darkmeter evolution single-photon detector life evaluation system, which comprises an entangled photon pair generation device, a light path beam splitting device, a to-be-evaluated single-photon detector, a coincidence measurement device, a dark counting rate monitoring module, a data processing evaluation module and a synchronous control module. According to the invention, based on the time correlation characteristic of the quantum entangled photon pair and the dynamic evolution of the dark count rate, the quantum detection performance degradation trend of the single-photon detector can be comprehensively reflected, and the accuracy of life evaluation can be improved; by means of the strong time correlation characteristic of quantum entangled photons, fine performance changes of the detector can be accurately captured, and the residual life of the detector can be pre-judged in advance; besides, the whole scheme does not need complex parameter regulation and control, the evaluation precision is guaranteed, meanwhile, the method can be adapted to single-photon detectors in different application scenes, and the reliability management efficiency of the core device of the quantum information system is effectively improved.

The invention discloses a miRNA (micro Ribonucleic Acid) quantum detection method based on plasmon enhancement. The method comprises the following steps: modifying gold nanocubes on the surface of a fluorescent nano-diamond to generate the nano-diamond with a local surface plasmon resonance enhancement effect; the preparation method comprises the following steps: preparing a plasmon enhanced nano-diamond probe and a silicon dioxide microsphere probe, and hybridizing target miRNA to form a sandwich structure compound; injecting the compound into a micro-fluidic chip with a micro-column array structure, so as to entrap and enrich the compound with the sandwich structure, and filtering to remove the uncombined plasmon enhanced nano-diamond probe; the compound is subjected to fluorescence signal detection, and quantum signal detection is combined, so that qualitative or quantitative analysis of the target miRNA is realized. The background of the free probe is reduced through microfluidic filtration, the detection repeatability is improved, the nanodiamond reading signal intensity is improved by combining plasmon enhancement, and the method has the advantages of being high in sensitivity, high in specificity, convenient to operate, suitable for trace sample detection and the like.

The invention discloses a quantum enhancement detection method and device based on dual-class heterodyne partition displacement, and the method comprises the steps: designing a hybrid quantum receiver based on a binary phase shift keying signal under the condition that a transmitting end uses a QPSK modulation signal, and deducing the error probability of the hybrid quantum receiver. The method has good detection performance, and can be practically used in a quantum detection system under the condition of considering the influence of the detection efficiency and quantum efficiency of the photon number detector.

This document discloses a method and a system for creating a state of health (SOH) prediction model for a battery. The method comprises receiving a data set containing gas emission data from at least one quantum detection (QD) sensor and performance data from at least one battery cell. It then processes the data set to derive at least one feature indicating the battery's performance and to predict the concentration states of at least one type of gas and at least one parameter. Furthermore, it involves creating an SOH prediction model to predict the deterioration of at least one component of at least one battery cell based on the processed data set and to calculate the SOH of the battery cell in association with the deterioration of at least one component.The creation process includes training the SOH prediction model to correlate the concentration of at least one type of gas and at least one battery parameter based on the derived at least one feature and predicted states.

The invention provides a quantum detection device for radio signals. The radio measurement device comprises a gas chamber used for being filled with alkali metal atom gas; receiving a radio signal to be detected; the detection light generating device is used for generating and emitting detection light which penetrates through the gas chamber; the detection light comprises a first path of detection light and a second path of detection light; the first path of detection light and the second path of detection light are vortex light pulses, and the pulse width of the vortex light pulses is smaller than the relaxation time of the electromagnetic induction transparency effect; the coupled light generating device is used for generating and transmitting coupled light to the gas chamber; the coupling light comprises a first path of coupling light and a second path of coupling light; the coupling light and the detection light are opposite in direction and coincide; the photoelectric detection device is used for receiving the detection light penetrating through the gas chamber and measuring the light intensity of the detection light; and the processor is used for obtaining the radio signal intensity according to the detection light intensity based on a preset linear relation between the detection light intensity and the radio signal intensity.

Systems, methods, and computer program products for characterizing photons are described. A signal from a superconducting nanowire single photon detector (SNSPD) is transmitted to a converter configured, based on the signal, to output data at a sampling rate. The data from the converter is transmitted to a computing node configured to infer one or more attributes of the at least one photon from the data.

The application relates to the technical field of quantum precision measurement, and is a kind of quantum detection system and detection method, which is used for detecting a to-be-measured microwave field generated by an external microwave radiation device, and comprises a quantum probe, a light source, a bias magnetic field module, a fluorescence detection module and a data processing module; the present scheme utilizes the corresponding relationship among diamond NV color centers, microwaves, light and magnetic fields, and designs a quantum microwave detection method and system capable of measuring external microwave fields; the quantum precision measurement technology can be used to realize accurate measurement of the microwave field; by arranging the bias magnetic field module, the energy level splitting degree of the diamond NV color center can be adjusted, and the resonance frequency of the diamond NV color center can be changed, so that the measurable frequency range of the diamond NV color center is expanded, and the applicability of the device is improved.

The present invention discloses a microwave precision detection method based on the transmission enhancement spectrum without particle number inversion, which belongs to the field of microwave quantum detection technology. This method abandons the electromagnetic induced transparency mechanism that traditional atomic microwave electric field meters rely on, and realizes the transmission field enhancement effect without particle number inversion conditions through periodic coupling of pulsed light, thereby generating a transmission spectrum. The linear relationship between the peak-to-peak spacing of the medium transmission spectrum and the microwave field intensity is utilized to achieve precise detection of the microwave field. Compared with traditional technologies, the present invention significantly compresses the spectral line width of the transmitted light, greatly improves the sensitivity and accuracy of the measurement, and shows broad application potential. In addition, the present invention provides a new generation mechanism for the design of atomic microwave electric field meters, opening up a new path for the development of microwave electric field precision detection technology.

This invention provides an overvoltage quantum detection system and method for Rydberg atom antenna combined electrical appliances, relating to the field of overvoltage condition detection technology for power equipment. The detection system includes: a main control device, a transmission optical fiber, and multiple overvoltage Rydberg sensors; wherein, the main control device is used to generate detection and coupling lasers; the transmission optical fiber connects the main control device and the overvoltage Rydberg sensors, and is used to transmit the detection and coupling lasers; the multiple overvoltage Rydberg sensors are arranged in a three-half wiring configuration at each T-shaped connection point of the combined electrical appliance under test, and are used to sense the internal electric field signal of the combined electrical appliance under test based on the electromagnetically induced transparency effect of Rydberg atoms and the Autler-Townes splitting phenomenon; the main control device is also used to determine the fault location of the combined electrical appliance under overvoltage conditions based on the internal electric field signal sensed by the multiple overvoltage Rydberg sensors and the sensing time. This invention improves the accuracy of overvoltage fault location.