Phys. Rev. A 77, 023619 (2008) [9 pages]Quantum-field dynamics of expanding and contracting Bose-Einstein condensatesReceived 9 September 2007; published 19 February 2008 We analyze the dynamics of quantum statistics in a harmonically trapped Bose-Einstein condensate, whose two-body interaction strength is controlled via a Feshbach resonance. From an initially noninteracting coherent state, the quantum field undergoes Kerr squeezing, which can be qualitatively described with a single mode model. To render the effect experimentally accessible, we propose a homodyne scheme, based on two hyperfine components, which converts the quadrature squeezing into number squeezing. The scheme is numerically demonstrated using a two-component Hartree-Fock-Bogoliubov formalism. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.77.023619
DOI:
10.1103/PhysRevA.77.023619
PACS:
03.75.Nt, 03.75.Mn
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