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Theory of decoherence in Bose-Einstein condensate interferometry

B J Dalton

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A full treatment of decoherence and dephasing effects in BEC interferometry has been developed based on using quantum correlation functions for treating interferometric effects. The BEC is described via a phase space distribution functional of the Wigner type for the condensate modes and the positive P type for the non-condensate modes. Ito equations for stochastic condensate and non-condensate field functions replace the functional Fokker-Planck equation for the distribution functional and stochastic averages of field function products determine the quantum correlation functions.


PACS

03.75.Hh Static properties of condensates; thermodynamical, statistical and structural properties

03.65.Yz Decoherence; open systems; quantum statistical methods

03.65.Vf Phases: geometric; dynamic or topological

Subjects

Quantum gases, liquids and solids

Quantum information and quantum mechanics

Dates

Issue 1 (2007)



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