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Quantum fluctuations in a Bose-Einstein condensate in an optical lattice

Record Type:	Electronic resources : Monograph/item
Title/Author:	Quantum fluctuations in a Bose-Einstein condensate in an optical lattice
Author:	Tuchman, Ari K.
Description:	153 p.
Notes:	Director: Mark Kasevich.
Notes:	Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1370.
Contained By:	Dissertation Abstracts International65-03B.
Subject:	Physics, Atomic.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3125316
ISBN:	0496726064

Quantum fluctuations in a Bose-Einstein condensate in an optical lattice
Tuchman, Ari K.

Quantum fluctuations in a Bose-Einstein condensate in an optical lattice [electronic resource] - 153 p.

Director: Mark Kasevich.

Thesis (Ph.D.)--Yale University, 2004.

We investigate the role of quantum fluctuations in a Bose-Einstein condensate in an optical lattice, where the quantum state of the system deviates strongly from a coherent state description. We demonstrate atom-number squeezed states by using the interference signature from an array of freely expanding condensates as a sensitive probe of their phase variance. We explore applications of these squeezed states and demonstrate the ability to use oscillations in the phase variance of the array as atomic beam splitters. These analogous beam splitters are then used to demonstrate a proof-of-principle interferometer which may offer the possibility of sub shot noise sensitivity. In addition, we induce a dynamical instability and investigate the effect of quantum fluctuations on the behavior of a BEC in this unstable regime.

ISBN: 0496726064Subjects--Topical Terms:

227348
Physics, Atomic.

Quantum fluctuations in a Bose-Einstein condensate in an optical lattice
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502 $a Thesis (Ph.D.)--Yale University, 2004.
520 # $a We investigate the role of quantum fluctuations in a Bose-Einstein condensate in an optical lattice, where the quantum state of the system deviates strongly from a coherent state description. We demonstrate atom-number squeezed states by using the interference signature from an array of freely expanding condensates as a sensitive probe of their phase variance. We explore applications of these squeezed states and demonstrate the ability to use oscillations in the phase variance of the array as atomic beam splitters. These analogous beam splitters are then used to demonstrate a proof-of-principle interferometer which may offer the possibility of sub shot noise sensitivity. In addition, we induce a dynamical instability and investigate the effect of quantum fluctuations on the behavior of a BEC in this unstable regime.
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