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          Institute: MPI für Quantenoptik     Collection: Laser Physics     Display Documents



ID: 27724.0, MPI für Quantenoptik / Laser Physics
Geometric phases of mesoscopic spin in Bose-Einstein condensates
Authors:Fuentes-Guridi, I.; Pachos, J.; Bose, S.; Vedral, V.; Choi, S.
Language:English
Date of Publication (YYYY-MM-DD):2002-08
Title of Journal:Physical Review A
Journal Abbrev.:Phys. Rev. A
Volume:66
Issue / Number:2
End Page:022102
Sequence Number of Article:022102
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We propose a possible scheme for generating spin-J geometric phases using a coupled two-mode Bose-Einstein condensate (BEC). First we show how to observe the standard Berry phase using Raman coupling between two hyperfine states of the BEC. We find that the presence of intrinsic interatomic collisions creates degeneracy in energy that allows implementation of the non- Abelian geometric phases as well. The evolutions produced can be used to produce interference between different atomic species with high numbers of atoms or to fine control the difference in atoms between the two species. Finally, we show that errors in the standard Berry phase due to elastic collisions may be corrected by controlling inelastic collisions between atoms.
External Publication Status:published
Document Type:Article
Communicated by:Herbert Walther
Affiliations:MPI für Quantenoptik/Laser Physics
External Affiliations:Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Opt; Sect, London SW7 2BZ, England; Univ Oxford, Clarendon Lab, Ctr Quantum Computat, Oxford OX1 3PU, England; Univ Rochester, Dept Chem, Rochester, NY 14627 USA
Identifiers:ISI:000177872600010
ISSN:1050-2947
URL:http://link.aps.org/abstract/PRA/v66/e022102
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