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Hollow-core anti-resonant optical fiber cold atomic beam guide and flux detection method and device

A technology of cold atomic beam and atomic flux, which is applied in the field of quantum sensing, can solve the problems of low atom guidance efficiency and achieve the effect of improving measurement resolution

Active Publication Date: 2018-11-06
BEIHANG UNIV
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Problems solved by technology

However, atomic interferometers in practical applications require continuous cold atomic beams, so traditional experimental methods cannot meet the requirements of technical applications such as atomic interferometry
[0007] In addition, in the existing experimental schemes that use hollow-core anti-resonant optical fibers to guide cold atoms, the efficiency of atom guidance is generally low

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  • Hollow-core anti-resonant optical fiber cold atomic beam guide and flux detection method and device
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  • Hollow-core anti-resonant optical fiber cold atomic beam guide and flux detection method and device

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the specific embodiments of the accompanying drawings.

[0038] The present invention provides a method for cold atomic beam guidance and atomic flux detection based on hollow-core anti-resonant optical fiber. The specific steps are as follows:

[0039] Step 1, cooling atoms and generating cold atomic beams;

[0040] Under the joint action of three beams of vertically facing cooling lasers 5 and a gradient magnetic field, the atoms in the vacuum atom source cavity 1 are decelerated and approach the overlapping position of the laser beams to produce cooled atoms; the incident direction of one of the cooling lasers 5 A small hole is set in the center of the 1 / 4λ wave plate reflector 7, which causes an imbalance in the cooling light field, so cold atoms are pushed to the small hole to form a cold atom beam.

[0041] Such as figure 1 As shown, the cooling of atoms and the generation of col...

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Abstract

The invention discloses a hollow-core anti-resonant optical fiber cold atomic beam guide and flux detection method and a hollow-core anti-resonant optical fiber cold atomic beam guide and flux detection device, and belongs to the technical field of quantum sensing. The method comprises the steps of 1, cooling atoms and generating a cold atomic beam; 2, using guiding laser to excite a fundamental mode Gaussian beam in a hollow-core anti-resonant optical fiber to guide the cold atomic beam; and 3, detecting the atomic flux of the cold atomic beam of the output end of the hollow-core anti-resonant optical fiber. The invention also discloses the hollow-core anti-resonant optical fiber cold atomic beam guide and atomic flux detection device specifically comprising a cold atomic beam generationpart, a cold atomic beam guiding part and a cold atomic beam detection part. By using the method and device provided by the invention, the continuous cold atomic streams can be guided, the difficultythat the efficiency of coupling the cold atomic beam into the hollow-core anti-resonant optical fiber is low is solved, meanwhile the scheme combining a balance detection method with a weak signal detection technology is used, and the measurement resolution is improved.

Description

technical field [0001] The invention belongs to the technical field of quantum sensing, and in particular relates to a cold atomic beam guidance and atomic flux detection method and device based on a hollow-core anti-resonance optical fiber. Background technique [0002] Laser cooling can make atoms reach very low kinetic energy, and its de Broglie wavelength is much larger than the normal atomic linear dimension, even reaching the level of light wave wavelength, so that matter waves and their interference phenomena become the objects of more extensive physical experiments, and then produce Many tools exploit the phenomenon of atomic interference as technological applications. Transporting atoms from one place to another, known as atom guidance, is the key and prerequisite for atom interferometers. Due to the flexibility and easy handling of optical fibers, the atom guidance technology using hollow-core anti-resonant optical fibers has more application value. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H3/02
Inventor 徐小斌宋凝芳胡笛路想想李玮宋一桐
Owner BEIHANG UNIV
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