Journal article icon

Journal article

Subsystem purity as an enforcer of entanglement.

Abstract:

We show that entanglement can always arise in the interaction of an arbitrarily large system in any mixed state with a single qubit in a pure state. This small initial purity is enough to enforce entanglement even when the total entropy is close to maximum. We demonstrate this feature using the Jaynes-Cummings interaction of a two-level atom in a pure state with a field in a thermal state at an arbitrarily high temperature. We find the time and temperature variation of a lower bound on the am...

Expand abstract
Publication status:
Published

Actions


Access Document


Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
Journal:
Physical Review Letters
Volume:
87
Issue:
5
Pages:
050401
Publication date:
2001-07-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
154938
Language:
English
Pubs id:
pubs:154938
UUID:
uuid:69377ccc-c411-40ef-a926-487c82d21e5a
Local pid:
pubs:154938
Deposit date:
2012-12-19

Terms of use


Views and Downloads






If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP