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arXiv:1111.3016 · Physical Review B

Entanglement dynamics of a superconducting phase qubit coupled to a two-level system

Guozhu Sun, Zhongyuan Zhou, Bo Mao, Xueda Wen, Peiheng Wu, Siyuan Han

Published Aug 1, 2012• 14 citations
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Abstract

We report the observation and quantitative characterization of driven and spontaneous oscillations of quantum entanglement, as measured by concurrence, in a bipartite system consisting of a macroscopic Josephson phase qubit coupled to a microscopic two-level system. The data clearly show the behavior of entanglement dynamics such as sudden death and revival, and the effect of decoherence and ac driving on entanglement.

DOI
10.1103/physrevb.86.064502

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