A Quantum Interference Method Based on Bec Coherent Vortex Superposition State at Normal Temperature

A technology of vortex superposition and coherent superposition, applied in the field of quantum interference, can solve problems such as excessive volume and laser cooling, and achieve the effect of overcoming large volume, improving sensitivity and stability, and reducing volume

Active Publication Date: 2018-09-21
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Problems solved by technology

[0005] The technical solution problem of the present invention is: to overcome in fiber optic gyroscope and atomic gyroscope, the problem of too large volume and laser cooling technology

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  • A Quantum Interference Method Based on Bec Coherent Vortex Superposition State at Normal Temperature
  • A Quantum Interference Method Based on Bec Coherent Vortex Superposition State at Normal Temperature
  • A Quantum Interference Method Based on Bec Coherent Vortex Superposition State at Normal Temperature

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[0061] specific implementation plan

[0062] The present invention is a quantum interference method based on BEC coherent vortex superposition state at normal temperature, and the specific implementation scheme is as follows figure 2 As shown, the specific implementation steps are as follows:

[0063] (1) Using a vertical cavity surface laser emitter to generate vortex light in a coherent superposition state

[0064] By designing the spiral phase plate in the vertical cavity laser transmitter, the inner circle of the spiral phase plate is |+l>, the outer circle is |-l>, and the diameter of the inner circle is 44.6% of the diameter of the entire spiral phase plate , finally produce the vortex light in the coherent superposition state of |+l> and |-l>.

[0065] Vertical cavity surface laser emitters such as figure 1 As shown, the laser cavity is composed of a distributed Bragg reflector (DBR) placed at the bottom, a laser emission layer, and a distributed Bragg reflector at ...

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Abstract

The invention relates to a quantum interference method based on a normal-temperature Bose-Einstein condensation (BEC) coherent vortex superposition state, and belongs to the technical field of quantum gyros.A vertical cavity surface laser transmitter is utilized for generating vortex light in the coherent superposition state; the vortex light is introduced into normal-temperature exciton-polariton BEC, and coherent vortex superposition state matter waves are generated; based on the Sagnac principle, a CCD is utilized for carrying out phase detection on the matter waves in the normal-temperature BEC to obtain a phase difference, and therefore the rotation angle rate of the normal-temperature exciton-polariton BEC is calculated.BEC at normal temperature is achieved through excitons and polaritons, the problem that a laser cooling device is too large and expensive is solved, and the size of an overall experiment device is reduced.Meanwhile, Sagnac interference of light is converted into Sagnac interference of matter waves, the Broglie wavelength can be reduced, and the annular area needed for Sagnac interference can be reduced.The method can be applied to design of the quantum gyros based on normal-temperature BEC.

Description

technical field [0001] The invention relates to a quantum interference method based on a normal-temperature BEC coherent vortex superposition state, which is suitable for the field of quantum gyroscopes and improves stability and sensitivity. technical background [0002] From the end of the 19th century to the present, gyroscopes, as the main inertial navigation detection equipment, have played an important role in the military and civilian fields. The traditional concept of gyroscope is sensitive to the angular motion of the gyroscope shell relative to the inertial space through the moment of momentum generated by the rotation of the rotor, but due to factors such as friction, the sensitivity and accuracy are low. Fiber optic gyroscopes and laser gyroscopes use the Sagnac effect. This kind of gyroscope no longer has a high-speed rotating rotor, but is based on a new physical mechanism to complete the measurement of the motion of the shell relative to the inertial space. Ho...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/64
CPCG01C19/64
Inventor 任元林源王华谢璐王卫杰李基成蕊王刚
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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