Phase coherence in a driven double-well system

T. Miyakawa, C. P. Search, P. Meystre

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Abstract

The dynamics of a molecular field incoherently pumped by the photoassociation of fermionic atoms and coupled by quantum tunneling in a double-well potential was analyzed. The relative phase distribution of the molecular modes in each well and their phase coherence was observed to be building up owing to quantum-mechanical fluctuations starting from the vacuum state. Three qualitatively different steady-state phase distributions, were identified depending on the ratio of the molecule-molecule interaction strength to interwell tunneling. The crossover from a phase-coherent regime to a phase-incoherent regime was examined as the ratio of the molecule-molecule interaction strength to interwell tunneling increased.

Original languageEnglish (US)
Article number053622
Pages (from-to)053622-1-053622-7
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume70
Issue number5 B
DOIs
StatePublished - Nov 1 2004

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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