Dynamical Realization of Macroscopic Superposition States of Cold Bosons in a Tilted Double Well

Details Dynamical Realization of Macroscopic Superposition States of Cold Bosons in a Tilted Double Well Dynamical Realization of Macroscopic Superposition States of Cold Bosons in a Tilted Double Well

2006-10-19

arxiv.org/abs/quant-ph/0610166v3

Europhys. Lett., v. 90, p. 10005 (2010)

Physics

Quantum Physics

6 pages, 5 figures, final version, only minor changes from previous arXiv version

Scientific paper

10.1209/0295-5075/90/10005

We present exact expressions for the quantum sloshing of Bose-Einstein condensates in a tilted two-well potential. Tunneling is suppressed by a small potential difference between wells, or tilt. However, tunneling resonances occur for critical values of the tilt when the barrier is high. At resonance, tunneling times on the order of 10-100 ms are possible. Furthermore, such tilted resonances lead to a dynamical scheme for creating few-body NOON-like macroscopic superposition states which are protected by the many body wavefunction against potential fluctuations.

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