Phase Transition, Entanglement and Squeezing in a Triple-Well Condensate

Details Phase Transition, Entanglement and Squeezing in a Triple-Well Condensate Phase Transition, Entanglement and Squeezing in a Triple-Well Condensate

2010-02-02

arxiv.org/abs/1002.0557v1

EPL, 90 (2010) 10014

Physics

Quantum Physics

6 pages, 5 figures

Scientific paper

10.1209/0295-5075/90/10014

We provide an in-depth characterization of a three modes Bose-Einstein condensate trapped in a symmetric circular triple well potential. We analyze how a subsystem independent measure of entanglement, the purity related to the su(3) algebra, scales for increasing number of atoms and signals correctly the quantum phase transition between two dynamical regimes in a specific arrangement. Moreover, this measure, which is intrinsically related to particle entanglement, also depicts if some squeezing is occurring when we consider the system's ground state.

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