Dynamics of quantum steerability for two atoms in coupled cavities
Dynamics of quantum steerability for two atoms in coupled cavities
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DOI：
10.1080/09500340.2018.1487595
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发表时间：
2018-06
影响因子：
1.3
通讯作者：
Ye-Qi Zhang;Yong-Tao Sun;L. Chen
中科院分区：
文献类型：
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作者：
Ye-Qi Zhang;Yong-Tao Sun;L. Chen
摘要研究了两个相互作用的原子之间的量子可操纵性动力学，每个原子都被囚禁在两个耦合腔中的一个腔中。与纠缠态相比，量子可操纵性在时间演化过程中表现为突然出生和突然死亡的现象。我们发现，腔衰减对可操纵性和纠缠度都起着破坏作用。研究还表明，生存时间以及最大可操纵性对腔体的非对称性敏感。此外，还发现可操纵性的突然死亡可以通过耦合腔的跳变率来控制。
ABSTRACT We study the dynamics of quantum steerability between two non-interacting atoms, each of which is trapped inside one of two coupled cavities. Compared with entanglement, quantum steerability manifests sudden birth and sudden death phenomenon during the time evolution. We find that the cavity decay plays a destruction role for both steerability and entanglement. It is also shown that the survival time as well as the maximal value of steerability are sensitive to the asymmetry of the cavities. Moreover, it is found the sudden death of steerability can be controlled by the hopping rate of the coupled cavities.