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Fragmentation, domain formation and atom number fluctuations of a two-species Bose–Einstein condensate in an optical lattice

Fragmentation, domain formation and atom number fluctuations of a two-species Bose–Einstein condensate in an optical lattice
Fragmentation, domain formation and atom number fluctuations of a two-species Bose–Einstein condensate in an optical lattice
We theoretically study the loading of a two-species Bose–Einstein condensate to an optical lattice in a tightly confined one-dimensional trap. Due to quantum fluctuations, the relative inter- and intra-species phase coherence
between the atoms and the on-site atom number fluctuations are reduced in the miscible regime. For the immiscible case the fluctuations are enhanced and the atoms form metastable interleaved spatially separated domains where the domain
length and its fluctuations are affected by quantum fluctuations.
043037-[32pp]
Shrestha, Uttam
308de33b-78cf-40f5-903d-78e91ba77f1f
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Shrestha, Uttam
308de33b-78cf-40f5-903d-78e91ba77f1f
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4

Shrestha, Uttam and Ruostekoski, Janne (2012) Fragmentation, domain formation and atom number fluctuations of a two-species Bose–Einstein condensate in an optical lattice. New Journal of Physics, 14, 043037-[32pp]. (doi:10.1088/1367-2630/14/4/043037).

Record type: Article

Abstract

We theoretically study the loading of a two-species Bose–Einstein condensate to an optical lattice in a tightly confined one-dimensional trap. Due to quantum fluctuations, the relative inter- and intra-species phase coherence
between the atoms and the on-site atom number fluctuations are reduced in the miscible regime. For the immiscible case the fluctuations are enhanced and the atoms form metastable interleaved spatially separated domains where the domain
length and its fluctuations are affected by quantum fluctuations.

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Published date: 26 April 2012
Organisations: Applied Mathematics

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Local EPrints ID: 337621
URI: http://eprints.soton.ac.uk/id/eprint/337621
PURE UUID: 80f44972-c936-40c5-a1c8-9b3805543e81

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Date deposited: 01 May 2012 12:30
Last modified: 08 Nov 2021 22:42

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Contributors

Author: Uttam Shrestha

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