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arXiv 1012.1028quant-ph
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去极化噪声中量子比特-量子数系统纠缠的产生和突然消亡

Generation and sudden death of entanglement in qubit-qutrit systems in depolarizing noise

Salman Khan

摘要:

研究了在整体、集体、局域和多局域去极化噪声影响下的量子比特-量子三重态混合系统的纠缠动力学。结果表明,去极化噪声可以用来诱导纠缠。在系统与环境的每一次耦合下都存在一个临界点,在这个临界点上所有的态都是同等纠缠的。此外,可以看出,当仅量子位耦合到其局部环境或系统耦合到多局部或全局环境时,不会发生ESD。这对于各种量子信息处理任务是一个重要的结果,因此需要进一步的研究。

英文摘要:

The dynamics of entanglement in some hybrid qubit-qutrit systems under the influence of global, collective, local and multilocal depolarizing noise is studied. It is shown that the depolarizing noise can be used to induce entanglement. A critical point exists under every coupling of the system with the environment at which all the states are equally entangled. Furthermore, it is seen that no ESD occurs when either only the qubit is coupled to its local environment or the system is coupled to multilocal or global environment. This is an important result for various quantum information processing tasks and hence needs further investigation.

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。

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