Noise induced interference fringes in trapped ultracold bosonic gases

Details Noise induced interference fringes in trapped ultracold bosonic gases Noise induced interference fringes in trapped ultracold bosonic gases

2008-11-18

arxiv.org/abs/0811.2857v1

Physics

Quantum Physics

14 pages, LaTex

Scientific paper

10.1103/PhysRevA.78.052118

We study the dynamics of ultracold atoms trapped in optical double-well potentials in presence of noise generated by an external environment. When prepared in a Fock number state, the system shows phase coherence in the averaged density profile obtained using standard absorption image techniques, that disappears in absence of noise. This effect indicates that also in many-body systems an external environment may enhance quantum coherence, instead of destroying it.

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