52 results about "Quantum sensor" patented technology

The invention relates to teaching equipment for quantum computation and quantum precision measurement. The teaching equipment for quantum computation and quantum precision measurement comprises a laser pulse generation module, an optical path module, a quantum sensor and a signal acquisition module. The laser pulse generation module is used for emitting laser pulse. The optical path module is arranged along an optical path of the laser pulse. The optical path module comprises a mirror bracket connected by means of a guide bar. A first collimation focusing element, the quantum sensor, a secondcollimation focusing element, a filtering element and a photodetector are sequentially arranged on the mirror bracket along the optical path. The quantum sensor is excited to generate fluorescent light by means of the laser pulse under the action of a magnetic field. The signal acquisition module is connected with the photodetector, and is used for collecting an electrical signal corresponding tothe fluorescent light. After the teaching equipment provided by the invention is adopted, students can complete a demonstration experiment of quantum algorithm and quantum precision magnetic measurement by means of manual operation, thereby mastering the basic principle of the quantum computation. The students can process the original experimental data so as to deepen the understanding of the quantum computation and the quantum precision measurement.

The resolution obtained by an imaging system utilizing separable photons can be achieved by an imaging system making use of entangled photons. Since resolution is not being increased from the separable-photon system, the imaging system utilizing entangled photons can take advantage of a smaller aperture. This results in a smaller and lighter system, which can be especially valuable in satellite imaging where weight and size play a vital role.

The invention discloses a method for improving collection efficiency of diamond NV color center fluorescence. The method comprises the following steps of forming an optical resonator by coupling a nano-diamond and a microsphere cavity based on the Purcell effect, integrating a microwave antenna thereon to prepare a microsphere cavity (200-500 microns) containing the nano-diamond, exciting the diamond NV color center to generate fluorescence by 532nm laser, and enhancing and collecting the fluorescence using a whispering wall mode such that the fluorescence generated by the diamond NV color center can be continuously circulated in the microsphere cavity, thereby establishing a strong light field and directly achieving the collection of fluorescence using the fiber connected to the sphere cavity. The method combines nano-diamond with optical microcavity with low requirements on preparation process, has the characteristics such as low cost, small mode volume and high energy density, realizes excitation and efficient collection of diamond NV color center fluorescence, and is expected to realize integrated application of NV color center based high sensitivity quantum sensors.

The present invention belongs to the technical field of rotation speed, acceleration speed measurement and inertial navigation, and relates to a quantum inertial sensor capable of measuring six-parameter inertial parameters and a measuring method thereof. The quantum sensor capable of measuring the six-parameter inertial parameters comprises two-dimensional microcrystalline glass vacuum chambers, a three-dimensional microcrystalline glass vacuum chamber, differential pumping tubes and alkali metal sources, the two two-dimensional microcrystalline glass vacuum chambers are connected with three-dimensional microcrystalline glass vacuum chamber by the differential pumping tubes, and respectively with the alkali metal sources, in addition, and the differential pumping tubes are prepared from microcrystalline glass same as the material of microcrystalline glass of the two-dimensional microcrystalline glass vacuum chambers and the three-dimensional microcrystalline glass vacuum chamber. By use of a scheme of counter-throwing of cold atomic groups and combination of manipulation of the cold atomic groups by Raman beams in different directions, and measurement of six-axis-space inertial parameters can be achieved. Based on low-temperature bonding technique, microcrystalline glass is used for constructing the vacuum chambers, so that the quantum inertial sensor has better light transmitting property, is more compact in structure, higher in thermal and magnetic stability and impact resistance, and more conducive to miniaturization.

Provided is a quantum sensor based on a rare-earth-ion doped optical crystal, having: a rare-earth-ion doped optical crystal; a low temperature providing unit, which provides a low temperature operating environment to the rare-earth-ion doped optical crystal; a constant magnetic field generation unit, which applies a constant magnetic field to the rare-earth-ion doped optical crystal; a light field generation unit, which provides a light field performing optical pumping on the rare-earth-ion doped optical crystal to prepare the rare-earth-ions in an initial spin state, and a light field for exciting Raman scattering of the rare-earth-ion doped optical crystal; a pulsed magnetic field generation unit, which applies a pulsed magnetic field perpendicular to the constant magnetic field to the rare-earth-ion doped optical crystal to make the rare-earth-ion doped optical crystal generate a spin echo; and a heterodyne Raman scattering light field detection and analysis unit, which detects and analyzes a Raman scattering light field radiated from the rare-earth-ion doped optical crystal. Further provided are uses of this quantum sensor for magnetic field sensing and electric field sensing as well as a sensing method.

An embodiment of the invention provides a novel high-accuracy current transformer suitable for a GIS, belonging to the technical field of precise measurement of current. The GIS comprises at least onecurrent-carrying conductor and a protective shell, and the current transformer comprises multiple quantum sensors, and a quantum detection system, wherein the quantum sensor is used for measuring magnetic field strength around each current-carrying conductor, at least 4n quantum sensors are uniformly distributed on a virtual circle with a central axis of each current-carrying conductor as a center of a circle and preset length as radius, a magnetic shielding layer is arranged at the periphery of each virtual circle, wherein n is a positive integer, and the quantum detection system is connected with each quantum sensor, and is used for acquiring magnetic field strength around the current-carrying conductor through the quantum sensor, and calculating current of each current-carrying conductor according to the magnetic field strength.

The invention provides an automatic photosynthetic photon sensor detection and calibration system and a method. The system comprises a uniform light source system, a mobile optical platform, a spectral radiometer and an upper computer, wherein the uniform light source system comprises an optical integrating sphere, a standard light source, an adjustable light source, an electronic attenuator connected with the adjustable light source, a light detector and a power supply cabinet; the power supply cabinet comprises a power supply connected with the standard light source and the adjustable light source, an attenuator controller connected with the electronic attenuator and a reading meter connected with the light detector; the power supply, the attenuator controller and the reading meter are all connected with the upper computer; the mobile optical platform comprises an optical guide rail, a stepper motor connected with the optical guide rail and the upper computer respectively, a movable base, and a calibration chassis arranged on the movable base via a clamping seat and a supporting rod; the center of the calibration chassis coaxial with the center of a light outlet is provided with a standard probe connected with the upper computer via the spectral radiometer; and calibrated sensors connected with the upper computer are uniformly arranged in a preset radius region of the center of the calibration chassis. Full range of the calibrated sensor is automatically calibrated, and the calibration precision and the efficiency are improved.

The invention provides a high-voltage current transformer based on quantum precision measurement, and belongs to the technical field of current precision measurement. The high-voltage current transformer comprises a plurality of quantum sensors, an insulation cavity, a quantum detection system and a sleeve insulation layer, wherein the quantum sensors are used for measuring the magnetic field intensity around a measured current-carrying conductor; the number of the quantum sensors is multiple of 4; the quantum sensors are uniformly distributed on a virtual circumference taking the center axisof the current-carrying conductor as the circle center and the preset length as the radius; the insulation cavity is formed between the current-carrying conductor and the quantum sensors, is filled with insulation gas used for avoiding the capacitance effect; the quantum detection system is connected with the quantum sensors through input lines and output lines, and is used for obtaining the magnetic field intensity around the current-carrying conductor through the quantum sensors, and calculating a current of the current-carrying conductor according to the magnetic field intensity; the sleeveinsulation layer is used for supporting and protecting the input lines and the output lines; and the insulation cavity is formed between the sleeve insulation layer and the input and output lines.

A quantum detector array is provided. The array includes a semiconductor substrate and an epitaxial layer on the semiconductor substrate. The epitaxial layer includes a plurality of binary quantum sensor elements operable in breakdown mode to generate signals, logic elements, and a digital processing circuit. The binary quantum sensor elements each have a radiation-sensitive drift region and amplification region with a pn junction for detecting radiation from a radiation-emission source. The logic elements are each electrically interconnected to a corresponding binary sensor element of the plurality of binary quantum sensor elements for resetting the corresponding binary sensor element, generating digital information based on the signals received from the corresponding binary sensor element, and outputting the digital information. The digital processing circuit carries out digital processing of logic and time signals from the binary sensor elements.

The invention discloses an early warning system when vehicle departs the lane, which comprises the following parts: at least one left side judgment device, at least one right side judgment device and an early warning device, wherein the left or right side judgment device acquires a light quantum function through light quantum sensor at first, which is judged by light quantum variation judgment mode group and eliminates the erroneous judgment through error elimination mode group to output a left side or right side depression bar signal; when the early warning system receives the signal, it outputs a warning order to make the warning device generate an early warning motion. The invention judgment reference changes according to the environment, which reduces the erroneous judgment factor of shadow.

The invention belongs to the technical field of quantum sensors, particularly relates to an electric heating sheet capable of inhibiting a magnetic field and a design method, and solves the technical problem that an existing electric heating sheet for a nuclear magnetic resonance gyroscope generates a strong unrelated magnetic field. The electric heating sheet capable of inhibiting the magnetic field comprises insulation layers and a heating element, wherein the heating element is laminated and bonded between the insulation layers at the high temperature through an adhesive; and the heating element adopts a demagnetizing structure formed by repeatedly bending two sections of heating conductor bars in the plane. In addition, the invention provides the design method for the electric heating sheet. According to the electric heating sheet capable of inhibiting the magnetic field, the magnetic dipole moment demagnetizing effect of a current in a single layer is achieved through reasonable heating conductor arrangement at first and then the demagnetizing effect is further achieved through a dual-layer or multi-layer structure, so that the near-field magnetic field of the electric heating sheet is controlled to be in an extremely low level.

The invention relates to a quantum current transformer. The quantum current transformer is characterized by comprising a quantum sensor and a quantum measurement module, wherein the quantum sensor and the quantum measurement module are connected through an optical fiber to form a loop. The NV color center has the characteristics of high sensitivity and high frequency response of magnetic measurement, so that the current can be measured in a continuous wave magnetic side environment; the high-sensitivity magnetic sensor can accurately measure current signals in a power grid, so that high-precision current amplitude and phase information is obtained, and the high-sensitivity magnetic sensor is of great significance to operation management of the power grid. Secondly, the magnetic sensor with a high frequency response range can monitor the distribution of high-frequency impact signals in the power grid, the safety state of the power grid is monitored while the current of the power grid is measured, and the safety of the power grid is enhanced.

The embodiment of the invention, which belongs to the field of electrical equipment, provides an insulation defect detection device and method for an electrical device. The insulation defect detectiondevice comprises a quantum sensor for detecting distribution characteristics of an electric field and / or a magnetic field intensity of an electric device, a laser generator for emitting laser light by the quantum sensor to excite the quantum sensor, a microwave transceiver for transmitting a microwave signal to the quantum sensor and receiving a microwave signal fed back by the quantum sensor, anelectron spin resonance spectrometer for starting the laser generator and the quantum sensor and acquiring distribution characteristics of the electric field and / or magnetic field intensity of the current transformer in space based on the fed back microwave signal, and a processor for determining whether the electrical device has a defect based on the detected distribution characteristics and determining the type of the defect if the electrical device has a defect. With the insulation defect detection device, the distribution characteristics of the electric field and the magnetic field of theelectrical device can be detected and the defect type of the electrical device is determined.

The invention relates to an LabVIEW-based quantum sensor magnetic field closed-loop control monitoring system. The system comprises a parameter setting module, a communication module, a data processing module, a display module and a lower computer magnetic field closed-loop control hardware circuit module, wherein the parameter setting module is used by a user for input of a parameter and a command and adjustment of the parameter; the communication module is used for performing serial communication between an upper computer and the magnetic field closed-loop control hardware circuit system, transmitting a control command or receiving data; and the data processing module is used for receiving data conversion and corresponding calculation of the data; the display module is used for displaying a calculation result and drawing; the magnetic field closed-loop control hardware circuit module is used for controlling a magnetic field of a nuclear magnetic resonance gyroscope according to the control parameter sent by an LabVIEW and feeding back the demodulated signal to the LabVIEW. According to the LabVIEW-based quantum sensor magnetic field closed-loop control monitoring system, the accurate control for a closed-loop of the nuclear magnetic resonance gyroscope is implemented, the number of instruments required for control is reduced, the key parameters of the magnetic field control are monitored, the development cycle is greatly reduced and the development cost is saved.

The invention discloses a graphene infrared sensor based on a photonic crystal photoresponse enhancement technology and a preparation method thereof. The graphene infrared sensor comprises a silicon wafer. An insulation layer is set on partial silicon wafer. An electrode layer is set on the insulation layer. When the silicon wafer with a silicon dioxide layer is selected, the electrode layer is directly formed on the partial silicon wafer. A photosensitive nano-graphene material layer is set on the partial electrode layer and the partial silicon wafer. Photonic crystal parts prepared through photoetching are set on all the rest electrode layer, the photosensitive nano-graphene material layer and all the rest silicon wafer. According to the graphene infrared sensor, a new-type nano-graphenematerial is taken as a photosensitive material and photonic crystals are added to gather infrared rays of specific wavelengths, so a photoresponse rate is improved, a preparation process is simple, the cost is low, and the graphene infrared sensor is a quantum sensor without refrigeration.

The embodiment of the invention provides an insulation defect detection device and method for a transformer bushing. The insulation defect detection device comprises a quantum sensor, an electron paramagnetic resonance spectrometer and a processor, wherein the quantum sensor is arranged on the outer surface of the transformer bushing; the electron paramagnetic resonance spectrometer comprises a laser generator and a microwave transceiver, and is used for controlling the laser generator to emit laser to the quantum sensor to excite the quantum sensor, controlling the microwave transceiver to emit a microwave signal to the quantum sensor and receive a microwave signal fed back by the quantum sensor, and obtaining the distribution characteristics of the electric field and / or magnetic field intensity of the transformer bushing; the processor is used for judging whether or not the transformer bushing has a defect based on the distribution characteristics and determining the defect type in the condition that it is judged that the transformer bushing has a defect. The insulation defect detection device can conduct detection based on the distribution characteristics of the electric field and / or magnetic field of the transformer bushing and figure out the defect type of the transformer bushing.

The invention relates to a geometrical physical property multi-feature parameter extraction method for a multi-phase medium, and aims to extract geometrical features and physical property parameters of an underground multi-phase medium at the same time and improve the accuracy of geological identification. Based on a generalized equivalent polarization model, an underground medium is defined to be composed of surrounding rock, a strong polarization medium and a weak polarization medium; time domain magnetic field response of the double-phase and multi-phase media is calculated under trapezoidal wave excitation, and a target function is formed with magnetic field data acquired by the superconducting quantum sensor; urrounding rock conductivity is calculated as a constraint condition according to the actually measured magnetic field early data; and aiming at the multi-dimensional and less-constraint conditions of extracted parameters, dimensions are set to correspond to a double-phase medium and a multi-phase medium respectively, parameter extraction is carried out by adopting a quantum particle swarm optimization algorithm respectively, and a double-phase medium extraction result is used as a constraint condition during multi-phase medium extraction. The method better conforms to the intrinsic characteristics of underground multiphase media, global extraction of multidimensional parameters is effectively achieved, and the extraction speed and accuracy are improved.

The invention discloses a greenhouse light amount control apparatus. The apparatus is characterized by comprising a PLC, and a light quantum sensor, an operating display, a first magnetron switch and a second magnetron switch that are connected with the PLC, wherein the first magnetron switch and the second magnetron switch are connected with a sunshade net control circuit and a light supplement lamp control circuit of a greenhouse respectively, and the PLC controls motions of the first magnetron switch and the second magnetron switch on the basis of signals provided by the light quantum sensor and the operating display. The light quantum sensor, the PLC, the magnetron switches and the like are combined organically, and a sunshade net and a light supplement lamp are controlled to be on and off according to data detected by the light quantum sensor. Therefore, light supplements are accurately provided to plants in all growing stages, the output is effectively increased, and energy is greatly saved. The invention also provides a light amount control method based on the above light amount control apparatus.

The invention discloses a quantum sensing networking method based on a wavelength division multiplexing entangled light source, and the method achieves the output of multi-wavelength entangled photons in frequency domain comb distribution through the spontaneous nonlinear effect in a nonlinear microcavity. Every two paired entangled single photons with equal frequency intervals are distributed to different point positions through a mature dense wavelength division multiplexing system in a classical optical fiber communication system, quantum sensors represented by wavelength-independent quantum interferometers are arranged at the different point positions, and networking interconnection of the quantum sensors is achieved through quantum entanglement distribution. Sensing information of all point locations in the quantum sensing network can be obtained from any point location, and leading-edge applications such as distributed cooperative sensing and the like are achieved. According to the invention, the independent quantum network server, the multi-point distributed quantum interferometer and the on-demand controlled single-photon detector are utilized, the topology variable distributed quantum sensing network function is realized, the application range of quantum communication and a quantum network is expanded, and a solution is provided for the integrated fusion of quantum Internet construction and quantum information technology.

The embodiment of the invention provides a current standard device based on quantum precision measurement and belongs to the technical field of precisionmeasurement of currents. The current standard device comprises a magnetic conducting ring provided with a gap, a first coil, a second coil, a primary side power supply, a quantum sensor and a controller. The first coil and the second coil are embedded into the magnetic conducting ring, and the second coil is used for inputting currents to be measured, wherein the number of turns of the first coil is equal to the number of turns of the second coil. The primary side power supply is connected with the first coil and used for inputting primary side currents. The quantum sensor is arranged in the gap and used for measuring magnetic field strength of the gap. The controller is connected with the primary side power supply and the quantum sensor. The controller is used for controlling the primary side power supply according to the magnetic field strength to input the primary side currents to the first coil and calculating the currents to be measured according to the primary side currents. According to the current standard device, the precision measurement of the currents can be achieved within the broadband range.

It is an object of the invention to improve processes, apparatuses and systems for measuring a measured variable. To this end, a measured variable is measured in a measuring process on the basis of an NV center as a quantum sensor. The NV center has a plurality of quantum states and is optically excitable on the basis of an occupancy of one of the quantum states into at least one excited state of the quantum states by means of an excitation light. The at least one excited state can decay at least with emission of emission light of the NV center. In the measuring process, the NV center is irradiated by the excitation light, the excitation light having a time periodic modulation, and a respective occupancy probability and / or a respective lifetime of the quantum states depending on the measured variable and the excitation light. A phase shift is determined between the emission light of the NV center and the modulation of the excitation light and a measurement value for the measured variable is determined on the basis thereof.

The invention provides a semiconductor laser generation device, which comprises a laser, a temperature sensor, a heat sink, an electric heating plate, a temperature measurement unit and a temperaturecontrol unit. The heat sink is stacked between the laser and the electric heating plate, and the two opposite surfaces of the heat sink closely fit the laser and the electric heating plate respectively. The electric heating plate is electrically connected with the temperature control unit. The semiconductor laser generation device cancels a TEC temperature control module with strong magnetism. Thetemperature measurement unit uses a high-frequency AC signal to excite the temperature sensor to avoid the generation of a low-frequency AC induced magnetic field during temperature measurement. Thetemperature control unit uses a high-frequency AC signal to drive the electric heating plate to avoid the generation of a low-frequency AC induced magnetic field during temperature control. Thus, it is ensured that the laser source itself does not introduce magnetic field bias or magnetic field noise, the accuracy of the sensor is improved, and the requirement for the application of quantum sensors in fields sensitive to magnetic field is met.

A sensor system is based on diamonds with a high density of NV centers. The description includes a) methods for producing the necessary diamonds of high NV center density, b) characteristics of such diamonds, c) sensing elements for utilizing the fluorescence radiation of such diamonds, d) sensing elements for utilizing the photocurrent of such diamonds, e) systems for evaluating these quantities, f) reduced noise systems for evaluating these systems, g) enclosures for using such systems in automatic placement equipment, g) methods for testing these systems, and h) a musical instrument as an example of an ultimate application of all these devices and methods.

The invention discloses a spin ensemble magnetic resonance phase high-bandwidth high-precision detection method, thereby guaranteeing the detection precision of magnetic resonance signals and realizing the high detection bandwidth at the same time. The method comprises the following steps: (1), extracting phase difference information of a magnetic resonance signal and an excitation signal; (2), eliminating a frequency multiplication signal in the phase difference information of the magnetic resonance signal and the excitation signal; and (3), acquiring a phase difference between the magnetic resonance signal and the excitation signal. The detection method has the following beneficial effects: the phase detection method for the spin ensemble magnetic resonance signals of the quantum sensoris involved; to be specific, when the disclosed method is used to application of a quantum sensor based on the magnetic resonance effect, the magnetic resonance signal detection precision can be guaranteed and the detection bandwidth is high.

The embodiment of the invention provides an insulation defect detection apparatus and method for a current transformer. The insulation defect detection apparatus comprises a quantum sensor arranged near a current transformer, a laser generator for emitting laser to the quantum sensor to excite the quantum sensor, a microwave transceiver for transmitting a microwave signal to the quantum sensor andreceiving a microwave signal fed back by the quantum sensor, an electron spin resonance spectrometer for starting the laser generator and the quantum sensor and acquiring distribution features of theelectric field and / or magnetic field intensity of the current transformer in space based on the fed back microwave signal, and a processor for determining whether the current transformer has a defectbased on the detected distribution features of the electric field and / or magnetic field intensity and determining the type of the defect if the current transformer has a defect. With the insulation defect detection apparatus, the distribution features of the electric field and the magnetic field of the current transformer can be detected and the defect type of the current transformer is determined.

The present invention discloses a quantum biology light wave physiotherapy instrument. The instrument comprises a temperature controller and a mattress, the mattress is connected with a resistance wire, the temperature controller controls the temperature of the resistance wire so as to control the temperature of the mattress; the mattress is provided with biology light wave silica gel gaskets, each biology light wave silica gel gasket comprises conductive carbon fibers to prompt human body blood circulation and aerobic metabolism, improve blood circulation and relieve arthralgia; the biology light wave silica gel gaskets are arranged in order along the length directions of the biology light wave silica gel gaskets, the biology light wave silica gel gaskets are arranged in order along the width directions of the biology light wave silica gel gaskets, the biology light wave silica gel gaskets are arranged at intervals; and the middle thickness of the biology light wave silica gel gaskets are larger than thicknesses of two ends of the biology light wave silica gel gaskets to facilitate the whole body physiotherapy, facilitate sleep and relieve insomnia and dizziness. Grid layers are arranged on the upper portions of the biology light wave silica gel gaskets, and the grid layers are configured to fix the biology light wave silica gel gaskets to allow the physiotherapy position to be accurate. A micro computer control instrument displays light quantum values through a light quantum sensor and controls the biology light wave silica gel gaskets through a control function key.

The execution mode of the invention provides a light high-precision current measuring device and belongs to the field of current precision measuring technologies. The current measuring device comprises a hoop, multiple quantum sensors and a quantum detection system, wherein the hoop is used for clamping a current measuring device body to a measured conductor, the hoop is of a hollow structure, anda harness is arranged in the hoop; the multiple quantum sensors are uniformly distributed in the hoop and used for measuring magnetic field intensity around the measured conductor, and the quantity of the multiple quantum sensors is a multiple of 4; and the quantum detection system is connected with each quantum sensor through the harness and is used for acquiring the magnetic field intensity around the measured conductor through each quantum sensor and further calculating the current flowing through the measured conductor according to the magnetic field intensity. Through the current measuring device, numerous defects of a traditional current detection device can be overcome, and the current can be measured more precisely.