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arXiv 0910.5754quant-ph
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环境诱导的单光子纠缠

Environment-induced entanglement with a single photon

Malena Hor-Meyll, Adriana Auyuanet, Carolina Borges, Adriano Aragão, José Augusto Huguenin, Antonio Khoury, Luiz Davidovich

摘要:

我们提出了一个全光系统,它耦合了单个光子的不同自由度,以研究在一个共同的环境中纠缠的产生。两个量子比特分别用光子的偏振态和厄米-高斯横模表示,而环境对应于光子的路径,对于一个初始的两个量子比特可分态,分析了当环境诱导跃迁的概率从0到1变化时,纠缠度的增加.一个在整个系统演化过程中不变的纠缠见证可以直接测量两个量子比特态的并发。

英文摘要:

We propose an all-optical setup, which couples different degrees of freedom of a single photon, to investigate entanglement generation by a common environment. The two qubits are represented by the photon polarization and Hermite-Gauss transverse modes, while the environment corresponds to the photon path. For an initially two-qubit separable state, the increase of entanglement is analyzed, as the probability of an environment-induced transition ranges from zero to one. An entanglement witness that is invariant throughout the evolution of the system yields a direct measurement of the concurrence of the two-qubit state.

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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