Noise-induced interference fringes in trapped ultracold bosonic gases

S. Anderloni, F. Benatti, R. Floreanini, and G. G. Guerreschi
Phys. Rev. A 78, 052118 – Published 21 November 2008

Abstract

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.

  • Received 12 August 2008

DOI:https://doi.org/10.1103/PhysRevA.78.052118

©2008 American Physical Society

Authors & Affiliations

S. Anderloni1,2, F. Benatti1,2, R. Floreanini2, and G. G. Guerreschi1

  • 1Dipartimento di Fisica Teorica, Università di Trieste, 34014 Trieste, Italy
  • 2Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, 34014 Trieste, Italy

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Issue

Vol. 78, Iss. 5 — November 2008

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