Coherence dynamics of two-mode condensates in asymmetric potentials

M. Jääskeläinen, P. Meystre

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Detection of weak forces with an accuracy beyond the standard quantum limit holds promise both for fundamental research and for technological applications. Schemes involving ultracold atoms for such measurements are now considered to be prime candidates for increased sensitivity. In this paper we use a combination of analytical and numerical techniques to investigate the possible subshot-noise estimation of applied force fields through detection of coherence dynamics of Bose-condensed atoms in asymmetric double-well traps. Following a semiclassical description of the system dynamics and fringe visibility, we present numerical simulations of the full quantum dynamics that demonstrate the dynamical production of phase squeezing beyond the standard quantum limit. Nonlinear interactions are found to limit the achievable amount to a finite value determined by the external weak force.

Original languageEnglish (US)
Article number013602
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number1
StatePublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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