Entanglement Dynamics of a Coupled Phase Qubit-TLS System
Guozhu Sun, Zhongyuan Zhou, Bo Mao, Xueda Wen, Peiheng Wu, Siyuan Han · arXiv (Cornell University) · 2011
Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA(Dated: November 23, 2011)We report the observation and quantitative characterization of driven and spontaneous oscilla-tions of quantum entanglement, as measured by concurrence, in a bipartite system consisting of amacroscopic Josephson phase qubit coupled to a microscopic two-level system. The data clearlyshow the remarkable behavior of entanglement dynamics such as sudden death and revival, and thee ect of decoherence and ac driving on entanglement.