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  Bogoliubov theory for atom scattering into separate regions

Wasak, T., Szańkowski, P., Bücker, R., Chwedeńczuk, J., & Trippenbach, M. (2014). Bogoliubov theory for atom scattering into separate regions. New Journal of Physics, 16(1): 013041. doi:10.1088/1367-2630/16/1/013041.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-BE36-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-2E70-F
Genre: Journal Article

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1367-2630_16_1_013041.pdf (Publisher version), 392KB
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2014
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IOP Publishing Ltd and Deutsche Physikalische Gesellschaft

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http://arxiv.org/abs/1310.3095 (Preprint)
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 Creators:
Wasak, T.1, Author
Szańkowski, P.1, Author
Bücker, R.2, 3, Author              
Chwedeńczuk, J.1, Author
Trippenbach, M.1, Author
Affiliations:
1Faculty of Physics, University of Warsaw, ulica Hoża 69, PL-00-681 Warszawa, Poland , ou_persistent22              
2Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
3Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, Stadionallee 2, A-1020 Vienna, Austria , ou_persistent22              

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Free keywords: Atom cooling methods; Atom and neutron optics; Calculations and mathematical techniques in atomic and molecular physics; Quantum gases, liquids and solids; Atomic and molecular physics; Computational physics
 Abstract: We review the Bogoliubov theory in the context of recent experiments, where atoms are scattered from a Bose-Einstein condensate into two well-separated regions. We find the full dynamics of the pair-production process, calculate the first and second order correlation functions and show that the system is ideally number-squeezed. We calculate the Fisher information to show how the entanglement between atoms from the two regions changes in time. We also provide a simple expression for the lower bound of the useful entanglement in the system in terms of the average number of scattered atoms and the number of modes they occupy. We then apply our theory to a recent 'twin-beam' experiment (Bücker et al 2011 Nature Phys. 7 608). The only numerical step of our semi-analytical description can be easily solved and does not require implementation of any stochastic methods.

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Language(s): eng - English
 Dates: 2013-12-192013-10-152013-12-232014-01-23
 Publication Status: Published online
 Pages: 21
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: BibTex Citekey: Wasak2014
DOI: 10.1088/1367-2630/16/1/013041
arXiv: 1310.3095
 Degree: -

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Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 16 (1) Sequence Number: 013041 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: /journals/resource/954926913666