Deterministic generation of a pair of entangled guided photons from a single atom in a nanofiber cavity
Deterministic generation of a pair of entangled guided photons from a single atom in a nanofiber cavity
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DOI：
10.1103/physreva.84.053801
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发表时间：
2011-11
影响因子：
2.9
通讯作者：
F. Kien;K. Hakuta
中科院分区：
文献类型：
--
作者：
F. Kien;K. Hakuta
我们研究纠缠引导光子的受控产生。该技术基于纳米纤维腔中单个原子的两级真空刺激拉曼过程。我们研究了双光子发射概率和纠缠并发对系统各种参数的依赖性，例如原子的径向和轴向位置、泵浦脉冲的强度和持续时间、一光子和二光子失谐、腔精细度以及泵浦脉冲之间的分离时间。我们发现，由于引导腔场被限制在光纤的横向平面和腔镜之间的空间中，即使纳米纤维腔的精细度适中，产生一对纠缠引导光子的概率也很高。
We investigate the controlled production of entangled guided photons. The technique is based on a two-stage vacuum-stimulated Raman process with a single atom in a nanofiber cavity. We examine the dependences of the two-photon emission probability and the entanglement concurrence on various parameters of the system, such as the radial and axial positions of the atom, the intensities and durations of the pump pulses, the one- and two-photon detunings, the cavity finesse, and the separation time between the pump pulses. We find that, due to the confinement of the guided cavity field in the transverse plane of the fiber and in the space between the cavity mirrors, the probability of generation of a pair of entangled guided photon can be high even when the finesse of the nanofiber cavity is moderate.