A Quantum Top Inside a Bose Josephson Junction

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We consider an atomic quantum dot confined between two weakly-coupled Bose-Einstein condensates, where the dot serves as an additional tunneling channel. It is shown that the thus-embedded atomic quantum dot is a pseudospin subject to an external torque, and therefore equivalent to a quantum top. We demonstrate by numerical analysis of the time-dependent coupled evolution equations that this microscopic quantum top is very sensitive to any deviation from linear oscillatory behavior of the condensates. For sufficiently strong dot-condensate coupling, the atomic quantum dot can induce or modify the tunneling between the macroscopic condensates in the two wells.
4 pages of RevTex4, 4 figures; rewritten discussion and displayed new results

Keywords

Other Condensed Matter

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/128748

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0608355
 http://arxiv.org/abs/cond-mat/0608355
 Phys. Rev. A 75, 053605 (2007)
 doi:10.1103/PhysRevA.75.053605

Collections

arXiv