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arXiv · 0907.0179

Detecting Entanglement with Jarzynski's Equality

Jenny Hide·Vlatko Vedral
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Abstract

We present a method for detecting the entanglement of a state using non-equilibrium 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 non-equilibrium work to be used in entanglement detection. To exemplify our results, we consider two different spin chains.

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Jenny Hide, Vlatko Vedral. 2009-12-17. Detecting Entanglement with Jarzynski's Equality. https://doi.org/10.1103/physreva.81.062303

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