The formation mechanism and stability of vortex in cold BEC

Rui Cheng; Jingbo Yao; Yuan Ren

doi:10.1117/12.2268683

8 March 2017 The formation mechanism and stability of vortex in cold BEC

Rui Cheng, Jingbo Yao, Yuan Ren

Proceedings Volume 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016; 1025556 (2017) https://doi.org/10.1117/12.2268683
Event: Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 2016, Jinhua, Suzhou, Chengdu, Xi'an, Wuxi, China

Abstract

With high precision and sensitivity, quantum gyroscope has become a research hotspot of inertial technology in recent years. Because the Bose-Einstein Condensate (BEC) in atomic gas has more condensate atoms, atomic gas is pure and thin, and there is no friction in atoms, the matter–wave gyroscopy with counter-rotating vortex superpositions has great potential of higher sensitivity, higher precision, and miniaturization. The basic mechanism and sensitivity of the matter– wave gyroscopy with counter-rotating vortex superpositions were analyzed, and the interaction between superposition of vortex beams and BEC atomic gases were studied, it is Stimulated Raman Adiabatic Passage (STIRAP). In the study, the outstanding issue that the gyroscopy is difficult to obtain stable vortices with high order orbital angular momentum was clarified by theoretical derivation on the base of Gross-Pitaevskii equation which is the basic equation in BEC. For solving the above problems, the scheme which is easy to achieve based on Sombrero potential trap was proposed.

Citation Download Citation

Rui Cheng, Jingbo Yao, and Yuan Ren "The formation mechanism and stability of vortex in cold BEC", Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 1025556 (8 March 2017); https://doi.org/10.1117/12.2268683

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KEYWORDS

Chemical species

Gyroscopes

Superposition

Gases

Particles

Signal to noise ratio

Raman spectroscopy

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