Asymmetric steering in coherent transport of atomic population with a three-well Bose-Hubbard model

Olsen, M.K (2015) Asymmetric steering in coherent transport of atomic population with a three-well Bose-Hubbard model. Journal of the Optical Society of America B: Optical Physics, 32 4: A15-A19. doi:10.1364/JOSAB.32.000A15


Author Olsen, M.K
Title Asymmetric steering in coherent transport of atomic population with a three-well Bose-Hubbard model
Journal name Journal of the Optical Society of America B: Optical Physics   Check publisher's open access policy
ISSN 0740-3224
1520-8540
Publication date 2015-04
Year available 2015
Sub-type Article (original research)
DOI 10.1364/JOSAB.32.000A15
Open Access Status
Volume 32
Issue 4
Start page A15
End page A19
Total pages 5
Place of publication Washington, United States
Publisher Optical Society of American (OSA)
Collection year 2016
Language eng
Abstract We analyze the Einstein–Podolsky–Rosen (EPR) steering properties in a three-well Bose–Hubbard model under the mechanism of coherent transport of atomic population (CTAP). This process, also known as transport without transit (TWT), transfers condensed atoms from one well of a lattice potential to another, nonadjacent well, without macroscopic occupation of the middle well. The dynamics and entanglement properties of this system have previously been analyzed and shown to be dependent on the initial quantum state of the atoms in the first well. In this work we utilize the phase-space method of stochastic integration in the positive-P representation. The system demonstrated inseparability between the wells for Fock initial states, and we show that steering is also found only for an initial Fock state. Depending on how we write our steering inequalities, steering is seen at different times, showing a basic asymmetry. This means that for part of the evolution, Alice can steer Bob but not vice versa. After the midpoint of the population transfer, this situation reverses.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2016 Collection
 
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