Macroscopic Quantum Phenomena in Atomic Bose-Einstein Condensates

Fernando Sols and Sigmund Kohler
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Fernando Sols: Universidad Autonoma de Madrid, Dpto. Física Teórica de la Materia Condensada, C- V
Sigmund Kohler: Universidad Autonoma de Madrid, Dpto. Física Teórica de la Materia Condensada, C- V

A chapter in Macroscopic Quantum Coherence and Quantum Computing, 2001, pp 41-50 from Springer

Abstract: Abstract We review some aspects of the physics of macroscopic quantum phenomena in Bose-Einstein condensates. Depending on the relative strength of the interaction and Josephson coupling energies, a double condensate may exhibit three different regimes: Rabi, Josephson, and Fock. In a macroscopic quantum interference experiment, the relative phase of two independent condensates may become well-defined when atoms emitted from them are forced to interfere. This process competes with the ballistic randomization of the phase due to interactions. A steady state is reached when the phase becomes defined by the detections at the same rate at which it is randomized. The resulting quantum phase uncertainty sets a fundamental limit to the achievable phase resolution.

Keywords: Bose systems; quantum interference; quantum fluctuations; Josephson effect; macroscopic quantum phenomena (search for similar items in EconPapers)
Date: 2001
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-1-4615-1245-5_6

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DOI: 10.1007/978-1-4615-1245-5_6

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