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Spin squeezing in a driven Bose-Einstein condensate

Spin squeezing in a driven Bose-Einstein condensate
Spin squeezing in a driven Bose-Einstein condensate
We consider a collection of atoms prepared in a Bose-Einstein condensate which interact via two-body elastic collisions. A resonant driving field couples two internal states which together constitute an effective spin 1/2 system for each atom, and from which a total spin for the gas can be defined. It is shown that in the limit of strong driving, the system dynamics reduces to a mechanism for spin squeezing similar to that of a recent proposal for undriven condensates. However, we find that the conditions for spatial stability in our driven system are complementary to those of the undriven system. Reasons for this difference, associated with the physics of dressed atom collisions, are discussed along with conditions for preparing and observing the spin squeezed state
1050-2947
043621-[8pp]
Jenkins, S.D.
65d861fb-b85a-4927-805a-7c906fca26c6
Kennedy, T.A.B.
68040c42-1663-4a03-87f0-b09045cf5357
Jenkins, S.D.
65d861fb-b85a-4927-805a-7c906fca26c6
Kennedy, T.A.B.
68040c42-1663-4a03-87f0-b09045cf5357

Jenkins, S.D. and Kennedy, T.A.B. (2002) Spin squeezing in a driven Bose-Einstein condensate. Physical Review A, 66 (4), 043621-[8pp]. (doi:10.1103/PhysRevA.66.043621).

Record type: Article

Abstract

We consider a collection of atoms prepared in a Bose-Einstein condensate which interact via two-body elastic collisions. A resonant driving field couples two internal states which together constitute an effective spin 1/2 system for each atom, and from which a total spin for the gas can be defined. It is shown that in the limit of strong driving, the system dynamics reduces to a mechanism for spin squeezing similar to that of a recent proposal for undriven condensates. However, we find that the conditions for spatial stability in our driven system are complementary to those of the undriven system. Reasons for this difference, associated with the physics of dressed atom collisions, are discussed along with conditions for preparing and observing the spin squeezed state

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Published date: October 2002
Organisations: Applied Mathematics

Identifiers

Local EPrints ID: 176275
URI: http://eprints.soton.ac.uk/id/eprint/176275
ISSN: 1050-2947
PURE UUID: dc6c0ba1-30de-4925-b0de-cab706c7a022

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Date deposited: 07 Mar 2011 15:19
Last modified: 07 Jan 2022 23:50

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Contributors

Author: S.D. Jenkins
Author: T.A.B. Kennedy

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