Dr SAMANTA PIANO SAMANTA.PIANO@NOTTINGHAM.AC.UK
Professor of Metrology
Genuine tripartite entanglement and nonlocality in Bose-Einstein condensates by collective atomic recoil
Piano, Samanta; Adesso, Gerardo
Authors
Professor GERARDO ADESSO gerardo.adesso@nottingham.ac.uk
Professor of Mathematical Physics
Abstract
We study a system represented by a Bose-Einstein condensate interacting with a cavity field in presence of a strong off-resonant pumping laser. This system can be described by a three-mode Gaussian state, where two are the atomic modes corresponding to atoms populating upper and lower momentum sidebands and the third mode describes the scattered cavity field light. We show that, as a consequence of the collective atomic recoil instability, these modes possess a genuine tripartite entanglement that increases unboundedly with the evolution time and is larger than the bipartite entanglement in any reduced two-mode bipartition. We further show that the state of the system exhibits genuine tripartite nonlocality, which can be revealed by a robust violation of the Svetlichny inequality when performing displaced parity measurements. Our exact results are obtained by exploiting the powerful machinery of phase-space informational measures for Gaussian states, which we briefly review in the opening sections of the paper.
Citation
Piano, S., & Adesso, G. (2013). Genuine tripartite entanglement and nonlocality in Bose-Einstein condensates by collective atomic recoil. Entropy, 15(5), https://doi.org/10.3390/e15051875
Journal Article Type | Article |
---|---|
Publication Date | May 17, 2013 |
Deposit Date | Apr 22, 2014 |
Publicly Available Date | Apr 22, 2014 |
Journal | Entropy |
Electronic ISSN | 1099-4300 |
Publisher | MDPI |
Peer Reviewed | Peer Reviewed |
Volume | 15 |
Issue | 5 |
DOI | https://doi.org/10.3390/e15051875 |
Public URL | https://nottingham-repository.worktribe.com/output/715105 |
Publisher URL | http://www.mdpi.com/1099-4300/15/5/1875 |
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
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