arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0311181quant-ph
收藏

多量子比特-腔系统中的量子关联和线性熵动力学

Dynamics of quantum correlations and linear entropy in a multi-qubit-cavity system

Alexandra Olaya-Castro, Neil F. Johnson, Luis Quiroga

摘要:

从理论上研究了多量子比特量子光学系统中纠缠与熵的关系。具体来说,我们研究了两个二能级原子与单模腔场相互作用的双量子比特混合系统的并发度和线性熵之间的定量关系。纠缠和熵的动力学演化是通过依赖于时间的腔-原子耦合来控制的。我们的理论研究结果使我们提出了一种替代的纠缠度量,它可以用来开发一个更一般的多体量子系统急需的相关措施。

英文摘要:

We present a theoretical study of the relationship between entanglement and entropy in multi-qubit quantum optical systems. Specifically we investigate quantitative relations between the concurrence and linear entropy for a two-qubit mixed system, implemented as two two-level atoms interacting with a single-mode cavity field. The dynamical evolutions of the entanglement and entropy, are controlled via time-dependent cavity-atom couplings. Our theoretical findings lead us to propose an alternative measure of entanglement, which could be used to develop a much needed correlation measure for more general multi-partite quantum systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑