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国家自然科学基金(11074114)

作品数:4 被引量:1H指数:1
相关作者:吴培亨孙国柱康壮杜之璨房玉荣更多>>
相关机构:南京大学更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划中央高校基本科研业务费专项资金更多>>
相关领域:电子电信理学更多>>

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Tuning an rf-SQUID flux qubit system’s potential with magnetic flux bias被引量:1
2012年
At an extremely low temperature of 20 inK, we measured the loop current in a tunable rf superconducting quantum interference device (SQUID) with a dc-SQUID. By adjusting the magnetic flux applied to the rf-SQUID loop (Фf) and the small dc-SQUID (Фfcjj), respectively, the potential shape of the system can be fully controlled in situ. Variation in the transition step and overlap size in the switching current with a barrier flux bias are analyzed, from which we can obtain some relevant device parameters and build a model to explain the experimental phenomenon.
花涛许伟伟史建新安德越孙国柱于扬吴培亨
关键词:RF-SQUIDPOTENTIAL
Dynamics of a qubit—TLS system under resonant microwave driving
2014年
We demonstrate the effect of different coupling strengths between a microscopic two-level system(TLS)and a microwave field on the dynamics of a qubit—TLS system when the bipartite system is subject to resonant microwave driving.Rabi beating with a different TLSmicrowave coupling strength is demonstrated in simulations.Entanglement,quantified by the concurrence between the qubit and TLS,both for pure states and mixed states,is simulated.When decoherence is considered,entanglement of the bipartite system oscillates with damping and exhibits entanglement sudden death and/or entanglement sudden death and revival.
Jianxin ShiWeiwei XuGuozhu SunJiquan ZhaiZhican DuLin WangTao HuaJian ChenLin KangPeiheng Wu
关键词:TLS微波场量子位
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