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arXiv · 0804.2943

Proposal for direct measurement of concurrence via visibility in a cavity QED system

Sang Min Lee·Se-Wan Ji·Hai-Woong Lee·M. Suhail Zubairy
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Abstract

An experimental scheme is proposed that allows direct measurement of the concurrence of a two-qubit cavity system. It is based on the cavity-QED technology using atoms as flying qubits and relies on the identity of the two-particle visibility of the atomic probability with the concurrence of the cavity system. The scheme works for any arbitrary pure initial state of the two-qubit cavity system.

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Sang Min Lee, Se-Wan Ji, Hai-Woong Lee, M. Suhail Zubairy. 2008-04-18. Proposal for direct measurement of concurrence via visibility in a cavity QED system. https://doi.org/10.1103/physreva.77.040301

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