Polarization-dependent photon switch in a one-dimensional coupled-resonator waveguide.
Polarization-dependent photon switch in a one-dimensional coupled-resonator waveguide.
复制标题
DOI：
10.1364/oe.21.020786
复制
发表时间：
2013-09
期刊：
影响因子：
3.8
通讯作者：
Zheyong Zhang;Yuli Dong;Shengli Zhang;Shiqun Zhu
中科院分区：
文献类型：
--
作者：
Zheyong Zhang;Yuli Dong;Shengli Zhang;Shiqun Zhu
偏振相关光子开关是构建未来大规模全光量子网络的重要组成部分。我们提出了一种在一维耦合腔波导中实现单光子开关的方案，在每个腔中分别嵌入N(A)Λ类型的三能级原子。通过调节原子与光场的相互作用，我们证明了具有一定偏振的初始入射光子可以转变为其正交偏振态。最后，我们以保真度为优值，数值评估了我们的光子开关方案在不同的系统参数下的性能，如原子数、能量失谐和偶极耦合。
Polarization-dependent photon switch is one of the most important ingredients in building future large-scale all-optical quantum network. We present a scheme for a single-photon switch in a one-dimensional coupled-resonator waveguide, where N(a) Λ-type three-level atoms are individually embedded in each of the resonator. By tuning the interaction between atom and field, we show that an initial incident photon with a certain polarization can be transformed into its orthogonal polarization state. Finally, we use the fidelity as a figure of merit and numerically evaluate the performance of our photon switch scheme in varieties of system parameters, such as number of atoms, energy detuning and dipole couplings.