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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 8, Iss. 2 — Jan. 15, 2001
  • pp: 106–111

On coherence of Bose field

Mariusz Gajda, Magdalena Załluska-Kotur, and Jan Mostowski  »View Author Affiliations

Optics Express, Vol. 8, Issue 2, pp. 106-111 (2001)

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We study a system of interacting bosons at zero temperature in an atomic trap. Using wave function that models the ground state of interacting bosons we examine the concepts of the order parameter, off-diagonal order and coherence of the system. We suggest that the coherence length becomes much smaller than the size of the system if the number of trapped particles exceeds a certain limit. This behavior is related to the unavoidable existence of two different length scales – one determined by the external potential and the second one depending on the two-body forces.

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OCIS Codes
(000.6590) General : Statistical mechanics
(000.6800) General : Theoretical physics
(020.7010) Atomic and molecular physics : Laser trapping
(030.1640) Coherence and statistical optics : Coherence
(270.0270) Quantum optics : Quantum optics

ToC Category:
Focus Issue: Quantum control of photons and matter

Original Manuscript: November 9, 2000
Published: January 15, 2001

Mariusz Gajda, Magdalena Zaluska-Kotur, and Jan Mostowski, "On coherence of Bose field," Opt. Express 8, 106-111 (2001)

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