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Survival of entanglement in thermal states

Abstract:

We present a general sufficiency condition for the presence of multipartite entanglement in thermal states stemming from the ground-state entanglement. The condition is written in terms of the ground-state entanglement and the partition function and it gives transition temperatures below which entanglement is guaranteed to survive. It is flexible and can be easily adapted to consider entanglement for different splittings, as well as be weakened to allow easier calculations by approximations. ...

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Publication status:
Published

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Publisher copy:
10.1209/0295-5075/81/40006

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
Journal:
EPL More from this journal
Volume:
81
Issue:
4
Pages:
40006-40006
Publication date:
2008-01-01
DOI:
EISSN:
1286-4854
ISSN:
0295-5075
Language:
English
Pubs id:
pubs:158104
UUID:
uuid:cc8fd525-c52f-4361-bde9-06ad9c3d1669
Local pid:
pubs:158104
Source identifiers:
158104
Deposit date:
2012-12-19

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