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Measuring and engineering entropy and spin squeezing in weakly linked Bose–Einstein condensates

Measuring and engineering entropy and spin squeezing in weakly linked Bose–Einstein condensates
Measuring and engineering entropy and spin squeezing in weakly linked Bose–Einstein condensates
We propose a method to infer the single-particle entropy of bosonic atoms in an optical lattice and to study the local evolution of entropy, spin squeezing and entropic inequalities for entanglement detection in such systems. This method is based on experimentally feasible measurements of non-nearest-neighbour coherences. We study a specific example of dynamically controlling atom tunnelling between selected sites and show that this could potentially also improve the metrologically relevant spin squeezing.
1-15
Cattani, F.
458a854d-6494-4af7-81e5-26c2ac430f63
Gross, C.
08b97cbf-a0b8-40d6-87c2-223a803763d6
Oberthaler, M.K.
b441510f-f9dc-445b-871f-64d50d01a089
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Cattani, F.
458a854d-6494-4af7-81e5-26c2ac430f63
Gross, C.
08b97cbf-a0b8-40d6-87c2-223a803763d6
Oberthaler, M.K.
b441510f-f9dc-445b-871f-64d50d01a089
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4

Cattani, F., Gross, C., Oberthaler, M.K. and Ruostekoski, J. (2013) Measuring and engineering entropy and spin squeezing in weakly linked Bose–Einstein condensates. New Journal of Physics, 15 (6), 1-15. (doi:10.1088/1367-2630/15/6/063035).

Record type: Article

Abstract

We propose a method to infer the single-particle entropy of bosonic atoms in an optical lattice and to study the local evolution of entropy, spin squeezing and entropic inequalities for entanglement detection in such systems. This method is based on experimentally feasible measurements of non-nearest-neighbour coherences. We study a specific example of dynamically controlling atom tunnelling between selected sites and show that this could potentially also improve the metrologically relevant spin squeezing.

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Published date: 26 June 2013
Organisations: Applied Mathematics

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Local EPrints ID: 354016
URI: http://eprints.soton.ac.uk/id/eprint/354016
PURE UUID: 9f672efb-f154-48f3-9e8a-af268fb52c3b

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Date deposited: 28 Jun 2013 09:05
Last modified: 20 Nov 2021 14:59

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Contributors

Author: F. Cattani
Author: C. Gross
Author: M.K. Oberthaler
Author: J. Ruostekoski

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