Quantum-noise properties of matter-wave gap solitons

Ray Kuang Lee; Elena A. Ostrovskaya; Yuri S. Kivshar; Yinchieh Lai

doi:10.1103/PhysRevA.72.033607

Quantum-noise properties of matter-wave gap solitons

Ray Kuang Lee^*
, Elena A. Ostrovskaya
, Yuri S. Kivshar
, Yinchieh Lai

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We study quantum-noise squeezing and quantum correlations of gap solitons in a Bose-Einstein condensate loaded into a one-dimensional optical lattice. By employing a linearized quantum theory we find that quantum-noise squeezing of gap solitons, produced during their evolution, is enhanced compared with the atomic solitons in a lattice-free case due to intrasoliton structure of quantum correlations induced by the Bragg scattering in the periodic potential. We also show that nonlinear interaction of gap solitons in dynamically stable bound states can produce strong atom-number correlation between the soliton pairs.

Original language	English
Article number	033607
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	72
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.72.033607
Publication status	Published - Sept 2005

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abstract = "We study quantum-noise squeezing and quantum correlations of gap solitons in a Bose-Einstein condensate loaded into a one-dimensional optical lattice. By employing a linearized quantum theory we find that quantum-noise squeezing of gap solitons, produced during their evolution, is enhanced compared with the atomic solitons in a lattice-free case due to intrasoliton structure of quantum correlations induced by the Bragg scattering in the periodic potential. We also show that nonlinear interaction of gap solitons in dynamically stable bound states can produce strong atom-number correlation between the soliton pairs.",

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AB - We study quantum-noise squeezing and quantum correlations of gap solitons in a Bose-Einstein condensate loaded into a one-dimensional optical lattice. By employing a linearized quantum theory we find that quantum-noise squeezing of gap solitons, produced during their evolution, is enhanced compared with the atomic solitons in a lattice-free case due to intrasoliton structure of quantum correlations induced by the Bragg scattering in the periodic potential. We also show that nonlinear interaction of gap solitons in dynamically stable bound states can produce strong atom-number correlation between the soliton pairs.

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DO - 10.1103/PhysRevA.72.033607

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Quantum-noise properties of matter-wave gap solitons

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