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33 results about "Atomic system" patented technology
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Compact atomic magnetometer and gyroscope based on a diverging laser beam
InactiveUS7872473B2Improve compactnessLow costTurn-sensitive devicesElectric/magnetic detectionAtomic systemGyroscope
An atomic magnetometer that simultaneously achieves high sensitivity, simple fabrication and small size. This design is based on a diverging (or converging) beam of light that passes through an alkali atom vapor cell and that contains a distribution of beam propagation vectors. The existence of more than one propagation direction permits longitudinal optical pumping of atomic system and simultaneous detection of the transverse atomic polarization. The design could be implemented with a micro machined alkali vapor cell and light from a single semiconductor laser. A small modification to the cell contents and excitation geometry allows for use as a gyroscope.
Owner:RGT UNIV OF CALIFORNIA +1
Compact atomic magnetometer and gyroscope based on a diverging laser beam
InactiveUS20090039881A1Low costReduce low frequency noiseTurn-sensitive devicesElectric/magnetic detectionAtomic systemGyroscope
An atomic magnetometer that simultaneously achieves high sensitivity, simple fabrication and small size. This design is based on a diverging (or converging) beam of light that passes through an alkali atom vapor cell and that contains a distribution of beam propagation vectors. The existence of more than one propagation direction permits longitudinal optical pumping of atomic system and simultaneous detection of the transverse atomic polarization. The design could be implemented with a micro machined alkali vapor cell and light from a single semiconductor laser. A small modification to the cell contents and excitation geometry allows for use as a gyroscope.
Owner:RGT UNIV OF CALIFORNIA +1
Cold atom system with atom chip wall
ActiveUS20050199871A1Reduces and eliminates needImprove cooling effectLaser detailsMaterial analysis by optical meansAtomic systemVacuum chamber
A compact vacuum chamber gives electric and optical access to a microchip, which is part of the chamber. The main use of the microchip is to confine, cool and manipulate cold atoms (atom chip). The main new feature is that the microchip forms one wall of a vacuum cell. This makes the chamber compact and lightweight, provides large optical access combined with small overall size, eliminates in-vacuum cabling, and makes the back surface of the chip accessible from the outside (e.g., for cooling and / or additional field-producing elements).
Owner:COLDQUANTA
Automated atomic system testing
ActiveUS7506211B2Error detection/correctionSpecific program execution arrangementsAtomic systemSystem testing
Owner:AIRBNB
An optomagnetic double resonance device
ActiveCN105659856BEasy detectionIncrease the number of atomsMeasurements using NMRMagnetic variable regulationAtomic systemSignal processing circuits
The invention belongs to the technical field of optical-magnetic double resonance, and discloses an optical-magnetic double-resonance device, which includes a light source module, an atomic system module, a radio frequency module, a signal detection module, and a signal processing circuit (15). The light source module includes a light source and a polarizer , the atomic system module includes an atomic gas chamber (7), the radio frequency module is fixed on the atomic gas chamber (7), and is used to generate an alternating magnetic field, and the direction of the alternating magnetic field is perpendicular to the axial direction of the atomic gas chamber (7), said The atomic system module also includes a second polarization beam splitter (5), the first λ / 4 glass slide (6) and a mirror (8); the signal detection module includes a beam splitter (4), a third polarization beam splitter Device (9), second λ / 4 slide (10), first photodetector (12), second photodetector (13) and differential circuit (14). The optical-magnetic double resonance device of the invention improves the signal-to-noise ratio of detection signals, and the application of the invention to the optical pump magnetometer can greatly improve the sensitivity and measurement accuracy of the optical pump magnetometer.
Owner:PEKING UNIV
Total optical Rb frequency marking method and system
InactiveCN1523398AAvoid influenceHigh frequency locking accuracyLaser detailsSemiconductor lasersAtomic systemCrystal oscillator frequencies
The invention is an all-optical Rb frequency standard method and system. The method: firstly, adjusting the pump laser to the wavelength corresponding to Rb D2 line; then modulating semiconductor laser by radio signal to produce optical component needed to excite coherent resonance, and using two proper side bands to excite Rb 0-0 ultrafine coherent resonant transition; when the frequency of fine crystal oscillator deviates, the atomic system outputs a deviation correcting signal to control VCO, to make the VCO return to original frequency. The system is composed of semiconductor laser diode, Rb atomic physical system, optical signal detecting and amplifying device and high-precision constant temperature VCO, which are linked with one another. It uses Rb atomic coherent resonant transition chart line to identify the frequency, and the frequency locking is higher; needs no mechanical exciting system, avoiding the effect of mechanical system; uses commercial fractional laser diode as excitation source.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Generation device for continuous variable quantum entanglement among multiple atom ensembles
ActiveCN107272299AEntanglement buildsIncrease entanglementNon-linear opticsAtomic systemQuantum entanglement
The invention relates to a generation device for continuous variable quantum entanglement among multiple atom ensembles. The technical problem that low-efficiency preparation exists in quantum entanglement among multiple existing atom ensembles is mainly solved. According to the technical scheme, the generation device for continuous variable quantum entanglement among multiple atom ensembles comprises a light source unit, a plurality of acoustic optical modulators, four non-degeneration optical parameter amplifiers, an optical beam splitter, four atomic systems and a measuring system; the light source unit is provided with four seed optical pulse signal aSl-aS4 output ends, four control optical pulse signal aC1-aC4 output ends and four local oscillation optical signal aL1-aL4 output ends; the seed optical pulse signals aS1-aS4 are connected with the input ends of the atomic systems through the acoustic optical modulators, the optical parameter amplifiers and the optical beam splitter, the control optical pulse signal aC1-aC4 output ends are connected with the second input ends of the atomic systems through the acoustic optical modulators, and the output ends of the atomic systems are connected with the measuring system. The local oscillation optical signals aL1-aL4 are connected with the measuring system.
Owner:SHANXI UNIV
Efficient quantum storage apparatus for continuous variable non-classic light field
InactiveCN107195324AEnhanced interactionEfficient storageQuantum computersNanoinformaticsAtomic systemOptoelectronics
The invention relates to an efficient quantum storage apparatus for a continuous variable non-classic light field, and mainly solves the technical problem of low quantum storage efficiency of an existing non-classic light field. According to the technical scheme, the efficient quantum storage apparatus for the continuous variable non-classic light field comprises a light source unit, an atomic system and a compression measurement system, wherein the light source unit is provided with a local oscillation light signal aL output end, a probe light pulse signal aP output end and a control light pulse signal aC output end; the probe light pulse signal aP output end is connected with a first input end of the atomic system; the control light pulse signal aC output end is connected with a second input end of the atomic system; the output end of the atomic system is connected with a first input end of the compression measurement system; the local oscillation light signal aL output end is connected with a second input end of the compression measurement system; and the compression measurement system consists of an optical beam splitter, two balanced zero beat detectors, a power subtractor and a digital storage oscilloscope.
Owner:SHANXI UNIV
Techniques for using chirped fields to reconfigure a medium that stores spectral features
Owner:MONTANA STATE UNIVERSITY
Optimization method for information interaction in system
ActiveCN104794010AReduce couplingQuick identificationInterprogram communicationAtomic systemSystems design
The invention discloses an optimization method for information interaction in a system. The method includes the steps that a system design data file is acquired and analyzed, and according to content of the system design data file, a system structure composition table, a system information composition table and a system input / output information table are built in a fixed format; according to the system structure composition table and the system information composition table, atomic systems of a system and an information interaction relation between the atomic systems are obtained through analysis, the completeness of information in the system is verified, and whether all information in the system design data file is written into the information interaction relation between the atomic systems is judged; according to the information interaction relation between the atomic systems, an atomic system set with an information dependence relation is obtained through analysis, and according to the atomic system set with the information dependence relation, the structure of the system is optimized.
Owner:NAT UNIV OF DEFENSE TECH
Method for achieving atomic energy level four-wave mixing spatial displacement and division measurement
InactiveCN103591893APhase-affecting property measurementsUsing optical meansThree levelAtomic system
The invention discloses a method for achieving atomic energy level four-wave mixing spatial displacement and division measurement. According to the method, laser pulse signals generated by a laser device are processed, and lasers with wave length being 532 nm are obtained and are divided into two beams which are used as pumping sources of two dye laser devices; a laser beam generated by one dye laser device passes through an optical device to form a light beam k1, a light beam k3 and a light beam k1', wherein the light beam k1' is in the same direction as the light beam k1, and a small included angle is formed between the light beam k1' and the light beam k1; a laser beam generated by the other dye laser device passes through the optical device to form a light beam k2 and a light beam k2', wherein the beam propagation direction of the light beam k2 coincides with that of the light beam k1, and an included angel is formed between the light beam k2' and the light beam k1; The light beams k1, k1', k2, k2' and k3 are converged to a sample pool, and two horizontal polarization four-wave mixing signals kF1 and kF2 are generated; interference experiment graphs of the four-wave mixing signals kF1 and kF2 and a detection signal k3 are measured, and therefore four-wave mixing spatial displacement and division measurement can be conducted. The method for achieving atomic energy level four-wave mixing spatial displacement and division measurement is suitable for four-wave mixing signals of open five-level systems of the types such as a cascade three-level type, a Y-type four-level type and a Y-type three-level type in an atom system.
Owner:XI AN JIAOTONG UNIV
Continuous variable entanglement distillation device between atomic ensembles
ActiveCN108732770AReduce entanglementDoes not destroy quantum entanglementOptical elementsAtomic systemFibre Channel
The invention relates to a continuous variable entanglement distillation device between atomic ensembles, which belongs to the technical field of continuous variable entanglement distillation. The continuous variable entanglement distillation device with good reliability and easy implementation provided by the invention is characterized by comprising a light source unit, first and second optical fiber channels, first and second optical choppers, first and second atomic systems, and a measurement system, wherein the light source unit is connected with input ends of the first and second opticalfiber channels respectively, an output end of the first optical fiber channel is connected with an input end of the first optical chopper, an output end of the second optical fiber channel is connected with an input end of the second optical chopper, an output end of the first optical chopper is connected with a first input end of the first atomic system, an output end of the second optical chopper is connected with a first input end of the second atomic system, the light source unit is connected with second input ends of the first and second atomic systems respectively, an output end of the first atomic system is connected with a first input end of the measurement system, an output end of the second atomic system is connected with a second input end of the measurement system, and the light source unit is connected with third and fourth input ends of the measurement system respectively. The continuous variable entanglement distillation device can be used in the field of quantum information.
Owner:SHANXI UNIV
Precision magneto-optical alignment system and method for atomic gyro
InactiveCN109839125AImprove performance indicatorsHigh control precisionMeasurement devicesAtomic systemPhotovoltaic detectors
The invention relates to the technical field of atomic gyro operation, and particularly discloses a precision magneto-optical alignment system and method for an atomic gyro. The precision magneto-optical alignment system for the atomic gyro comprises a detecting light source, a driving light source, a three-dimensional coil and an atomic gas chamber, wherein the atomic gas chamber is placed in thecenter of the three-dimensional coil; the detecting light source is placed outside the three-dimensional coil at one side of the atomic gas chamber; a photodetector is placed at the other side of thethree-dimensional coil corresponding to the detecting light source, and thus, irradiation of the detecting light source passes through the atomic gas chamber and then can be received by the photodetector; and the driving light source is placed in a direction vertical to the detecting light source, and light generated by the driving light source can pass through the atomic gas chamber. Accordingto the precision magneto-optical alignment system and the method for the atomic gyro, a driving light field and a main magnetic field can be ensured to be constantly in an alignment state, the operation precision of an atomic system inside the atomic gyro is enhanced, and a powerful help is provided for improvement of the atomic gyro precision and various performance indicators.
Owner:BEIJING AUTOMATION CONTROL EQUIP INST
Preparation method of spin compression state of cold atom system
ActiveCN113014257AImprove precision measurement accuracyEasy to implementPulse automatic controlRaman scatteringPotential wellAtomic system
The invention discloses a method for preparing a spin compression state of a cold atom system, which comprises the following steps: providing a two-component spin system which comprises a two-dimensional potential well which has an energy level structure of which the atomic spin state depends on atomic interaction; applying Raman light to the two-dimensional potential well, so that spin interaction equivalently generated by atomic interaction in the two-dimensional potential well is not zero; recording a spin fluctuation signal from the two-dimensional potential well, and determining a change condition of spin compression from the spin fluctuation signal; and according to the change condition of the spin compression, measuring the spin compression property when the spin compression parameter is minimum so as to generate a spin compression state. The method has the advantages that the method is easy to implement, the limitation of the measurement limit of a quantum system is broken through, a new method is provided for improving the quantum precision measurement precision, and the spin compression state is more stable.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
Metal vapor-density control system with composite multiphase electrode
Some variations provide a metal vapor-density control system comprising: a first electrode; a multiphase second electrode that is electrically isolated from the first electrode, wherein the second electrode contains an ion-conducting phase capable of transporting mobile ions and an atom-transporting phase capable of storing and transporting neutral forms of the mobile ions; and an ion-conducting layer interposed between the first electrode and the second electrode, wherein the ion-conducting layer is capable of transporting the mobile ions. The metal vapor-density control system may be contained within a vapor cell, a cold atom system, an atom chip, an atom gyroscope, an atomic clock, a communication system switch or buffer, a single-photon generator or detector, a gas-phase atom sensor, a nonlinear frequency generator, a precision spectroscopy instrument, an accelerometer, a gyroscope, an atom interferometer, a magneto-optical trap, an atomic-cloud imaging apparatus, or an atom dispenser system, for example.
Owner:HRL LAB
Method and device for computation of system coupling degree
The invention discloses a method and device for computation of a system coupling degree. The method comprises the steps that a system design data document is acquired and analyzed, and a system structure constitution table, a system interface relation constitution table and a system internal information transmission statistical table are established in a designed format according to the system design data document; according to the system structure constitution table and the system interface relation constitution table, atomic systems are selected, interface relations between the atomic systems are determined, and intactness of interface relations inside the system is verified; and according to the system interface relations between the atomic systems and the system internal information transmission statistical table, the coupling degree of the system can be computed. According to the invention, an effective supporting method is provided for measurement and evaluation of correlation intensity between system modules. Hence, analysis of a complexity degree of a complicated information system can be guided.
Owner:NAT UNIV OF DEFENSE TECH
A continuous variable entanglement distillation device between atomic ensembles
ActiveCN108732770BReduce entanglementDoes not destroy quantum entanglementOptical elementsAtomic systemMechanical engineering
Owner:SHANXI UNIV
High resolution imaging device used for cold atom system
ActiveCN102879915BEasy to operateCompact structureOptical elementsAtomic systemHigh resolution imaging
The invention discloses a high resolution imaging device used for a cold atom system. The device comprises a disordered optical lattice generation path and an imaging light path, and is characterized in that the disordered optical lattice generation path comprises a laser beam and is composed of a first lens, a second lens, a diffusion barrier, a reflection mirror and a dichroic mirror along the laser beam direction in sequence; the first lens and the second lens form a beam expanding system; the reflection mirror and the dichroic mirror are in 45 degrees with the beam direction; the imaging light path comprises an imaging lighting beam and is composed of a vacuum pool, a third lens, a dichroic mirror, a fourth lens and a CCD (Charge Coupled Device) along the imaging lighting direction in sequence. According to the device, a laser speckle generation light path and an imaging light path are combined together, the purpose of loading disordered optical lattices to cold atom groups is realized by using an aberration elimination lens, the high resolution imaging of the atom groups is also realized, and the high resolution imaging device has the advantages of simple structure, high light path integration degree, less occupied space, adjustment convenience and the like.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
A device for generating continuous variable light and atomic ensemble entanglement
ActiveCN105652555BVerification entanglementRealize measurementNon-linear opticsAtomic systemOptoelectronics
Owner:SHANXI UNIV
A method for preparing a spin-squeezed state of a cold atomic system
ActiveCN113014257BImprove precision measurement accuracyEasy to implementPulse automatic controlRaman scatteringAtomic systemPotential well
The invention discloses a method for preparing a spin-squeezed state of a cold atomic system, comprising: providing a two-component spin system, which includes a two-dimensional potential well, and the two-dimensional potential well has an atomic spin state dependent on atomic interaction The energy level structure of the energy level structure; Raman light is applied to the two-dimensional potential well, so that the spin interaction equivalently produced by the atomic interaction in the two-dimensional potential well is not zero; recording the self from the two-dimensional potential well The spin fluctuation signal is used to determine the change of the spin squeeze from the spin fluctuation signal; according to the change of the spin squeeze, the spin squeeze property is measured when the spin squeeze parameter is minimum, so as to generate the spin squeeze state. The invention has the advantages of simple implementation, breaking through the limitation of the quantum system measurement limit, providing a new method for improving the precision of quantum precision measurement, and making the spin squeezed state more stable.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
All-optical, broadband and low-noise phase gate implementation method
The invention relates to an all-optical, broadband and low-noise phase gate implementation method. A coherently prepared four-energy-level atomic system interacts with a beam of strong pump light anda beam of weak probe light, so that the four-energy-level atomic system becomes a combined system of an electromagnetically induced transparency (EIT) system and an active Raman gain (ARG) system. Byutilizing the two-wave mixing effect, the absorption generated by the EIT system and the gain generated by the ARG system are mutually counteracted, so that the gain / absorption of the detection lightis close to zero in a very wide frequency domain, and meanwhile, the noise in the four-energy-level atomic system is remarkably inhibited; and on such basis, a beam of phase control light is added tochange the phase of the detection light by pi, so that an all-optical, broadband and low-noise phase gate is realized.
Owner:TONGJI UNIV
Techniques for using chirped fields to reconfigure a medium that stores spectral features
InactiveUS20070285762A1Easy to handleAdjust absorptionDigital storageLight demodulationAtomic systemMonochromatic color
Techniques for reconfiguring spectral features stored in a medium based on a two-state atomic system with transition dipole moment μ includes causing a chirp to pass into the medium. The chirp includes a monochromatic frequency that varies in time by a chirp rate κ over a frequency band BR during a time interval TR. The amplitude AR of the chirp is constant over BR and equal to AR=(hbar / μπ)√{square root over ((κ ln [2 / ε]))}, The term hbar is reduced Plank's constant, ln is a natural logarithm function, and π is a ratio of a circumference of a circle to a diameter of the circle. For ε<<1, the atomic-state populations in the two states are inverted. For ε=1, prior atomic-state populations are erased, with final populations equal in the two states, regardless of populations before erasure.
Owner:MONTANA STATE UNIVERSITY
A Method for Optimizing Interaction of Information in a System
ActiveCN104794010BReduce couplingQuick identificationInterprogram communicationAtomic systemSystems design
The invention discloses a method for optimizing information interaction in a system, which includes acquiring and analyzing system design data files, and constructing a system structure composition table, a system information composition table, and system input / output according to a fixed format according to the content of the system design data file information table; according to the system structure composition table and the system information composition table, analyze and obtain the atomic system of the system and the information interaction relationship between the atomic systems, and verify the completeness of the internal information of the system, and judge whether the information in the system design data file is all Enter the information interaction relationship between atomic systems; according to the information interaction relationship between atomic systems, analyze and obtain the atomic system set with information dependence relationship, and optimize the system structure according to the atomic system set with information dependence relationship.
Owner:NAT UNIV OF DEFENSE TECH
A device for generating entanglement of continuous variable atomic ensemble
ActiveCN105676559BVerification entanglementEntanglement goodNon-linear opticsAtomic systemQuantum entanglement
The invention relates to a generating device for entanglement of continuous variable atom ensemble and belongs to the generating device for the entanglement of atom ensemble applied to a quantum information network. The generating device is used for solving the technical problem that probability preparation exists in the present preparation for the entanglement of atom ensemble of variables separation. According to the technical scheme provided by the invention, the generating device for entanglement of continuous variable atom ensemble comprises a light source unit, a plurality of beam coupling systems, two sets of atom ensembles, an entanglement measuring system and a feedback unit. The orthogonal component of a light field in the continuous variable quantum information and the collective spin wave of the atom ensemble are utilized to generate the entanglement of two sets of stokes light and spin wave of atom ensemble in a spontaneous raman scattering process, and then interference signals of the two beams of stokes light are fed back to a first atom ensemble through the quantum entanglement exchange, the entanglements of the first atom ensemble and the second atom ensemble are certainly prepared, and the generated stokes light is utilized to measure and analyze the entanglement of the atom ensemble.
Owner:SHANXI UNIV
Internal heating ultra-high temperature device for generating high-collimation atomic beam
The invention belongs to the technical field of generation of high-collimation atomic beams, and particularly relates to an internal heating ultra-high temperature device for generating high-collimation atomic beams. A vacuum cavity shell is arranged on the outer side of the body, and a flange electrode, an electric cross-core and a water cross-core are arranged at one end of the body. The water-cooling equipment is arranged in the vacuum cavity shell and consists of a water-cooling inner wall, a water-cooling pipeline and a water-cooling outer wall; the ceramic base is arranged in the vacuum cavity shell and is used for supporting the heater and the water cooling equipment; the heater is used for heating the crucible main body, and the crucible main body is sleeved with the heater; an atomic furnace cover is arranged at one end of the crucible main body; an emergent flange is arranged on the same side of the atomic furnace cover and at the other end of the vacuum cavity shell; the high-quality and high-purity atomic beam can be provided for a cold atom experiment system in the cold atom experiment system. And the cold atom system is used for quantum simulation. By adding an artificial standard field, the topological problem can be researched, and spin-orbit coupling of Fermi gas is realized at cold atoms.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Preprocessing acceleration method and device, equipment and storage medium
ActiveCN114724639AReduce the number of timesShorten the timeComputational theoretical chemistryFile/folder operationsAtomic systemAtomic type
The embodiment of the invention relates to a preprocessing acceleration method and device, equipment and a storage medium, and the method comprises the steps: reading an atomic system file, and obtaining the atomic information of each atom; processing the atom information of each atom to obtain test reference information corresponding to at least two preset tests; according to the test reference information corresponding to the at least two preset tests, carrying out the at least two preset tests on the atomic system; wherein the at least two preset checks comprise at least two of energy checks, boundary checks, topological structure checks, atomic charge checks and atom type statistics. According to the embodiment of the invention, the preprocessing logic can be rearranged, and the preset inspection of the atomic system is merged, so that the atomic system file can be read once, and compared with the prior art, the number of times of reading the atomic system file can be reduced, the time spent on reading the atomic system file by preprocessing is saved, and preprocessing is accelerated.
Owner:国家超级计算天津中心
Total optical Rb frequency marking method and system
InactiveCN1252511CHigh frequency locking accuracyReduce weight and sizeLaser detailsPulse automatic controlAtomic systemCrystal oscillator frequencies
The invention is an all-optical Rb frequency standard method and system. The method: firstly, adjusting the pump laser to the wavelength corresponding to Rb D2 line; then modulating semiconductor laser by radio signal to produce optical component needed to excite coherent resonance, and using two proper side bands to excite Rb 0-0 ultrafine coherent resonant transition; when the frequency of fine crystal oscillator deviates, the atomic system outputs a deviation correcting signal to control VCO, to make the VCO return to original frequency. The system is composed of semiconductor laser diode, Rb atomic physical system, optical signal detecting and amplifying device and high-precision constant temperature VCO, which are linked with one another. It uses Rb atomic coherent resonant transition chart line to identify the frequency, and the frequency locking is higher; needs no mechanical exciting system, avoiding the effect of mechanical system; uses commercial fractional laser diode as excitation source.
Owner:SOUTH CHINA NORMAL UNIVERSITY
A method of obtaining optical comb from Erbium-doped mode-locked fiber laser
ActiveCN103825168BGreat application potentialReduced loss of stabilityActive medium shape and constructionMode locked fiber laserAtomic system
The invention discloses a method and device for acquiring an optical comb through an er-doped mode-locked fiber laser. The method comprises the steps that the repeated frequency of the optical comb generated by the er-doped mode-locked fiber layer and one mode of the optical comb are simultaneously locked on the three-level structure of a same atomic system to obtain the optical comb with a stable mode, so that a frequency source acquiring device is made to be compact in structure and small in occupied physical space, and therefore the demand for the portability of the frequency source device of applications such as optical fiber communication is met. The method and device can achieve output of laser comb-shaped spectral lines within the range from 1510 nm to 1610 nm, the time domain pulse width of lasers is 150 fs, and the average power is 40 mW. The long-term stability of the repeated frequency is 3E -12, and the long-term stability of a single mode is 7E-12. The index can meet the communication demand based on the optical comb, and great application potentiality is achieved in the optical fiber communication field.
Owner:PEKING UNIV
A Method for Generating Weak Light and Low Velocity Stable Optical Soliton
ActiveCN112532320BSlow propagation velocityLow power generationElectromagnetic transmissionAtomic systemParticle physics
The invention discloses a method for producing weak light and low-speed stable optical solitons, through incoherent pumping light Γ 21 Acting on the four-level inverted Y-type Rydberg cold atom system with a broadened lifetime, the interference between the atomic quantum states induced by light is used to eliminate the absorption of the incident light with weaker light intensity by the resonant medium, and obtain a larger Non-linear effects, stable PT symmetric optical solitons are obtained. The invention is simple and easy to understand, easy to realize and strong in practicability, can adjust related parameters according to actual conditions, and provides strong support for the in-depth application and development of optical solitons in the technical field of optical communication.
Owner:HUBEI UNIV OF SCI & TECH
A device for generating deterministic entanglement of continuous variable three-atom ensemble
ActiveCN111190316BSimplified entanglementSimplified entanglement generationNon-linear opticsAtomic systemBeam splitting
The invention relates to a continuous variable three-atom ensemble deterministic entanglement generating device, belonging to the technical field of atomic ensemble deterministic entanglement generating devices; the technical problem to be solved is to provide a continuous variable three-atom system with good reliability and easy realization. The improvement of the structure of the ensemble deterministic entanglement generating device; the technical solution adopted to solve the technical problem is: the light source unit is respectively connected with the first, second, and fourth input ends of the first, second, and third atomic ensembles, and the feedback system. The fourth, fifth, and sixth input terminals are connected to the fourth input terminal of the measurement system, and the first and second output terminals of the first, second, and third atomic ensembles are connected to the beam splitter network and the input terminal of the measurement system. , the output end of the beam splitter network is connected with the first, second and third input ends of the feedback system, and the first, second and third output ends of the feedback system are connected with the first, second and third atomic ensemble The third input end is connected; the invention can be widely used in the field of quantum information.
Owner:TAIYUAN NORMAL UNIV
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