Journal
PHYSICAL REVIEW A
Volume 81, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.81.062303
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Funding
- Engineering and Physical Sciences Research Council (EPSRC)
- Wolfson Foundation
- Royal Society
- European Union
- National Research Foundation
- Ministry of Education (Singapore)
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We present a method for detecting the entanglement of a state using nonequilibrium processes. A comparison of relative entropies allows us to construct an entanglement witness. The relative entropy can further be related to the quantum Jarzynski equality, allowing nonequilibrium work to be used in entanglement detection. To exemplify our results, we consider two different spin chains.
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