Generation of photon pairs in topologically protected guided modes
Generation of photon pairs in topologically protected guided modes
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DOI：
10.1103/physreva.100.053827
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发表时间：
2019-11-13
影响因子：
2.9
通讯作者：
Liscidini, M.
中科院分区：
文献类型：
--
作者：
Bergamasco, N.;Liscidini, M.
我们提出了一个理论研究通过自发四波混频在支持拓扑保护的波导阵列中产生光子对。根据统计方法，我们引入了波导位置的增量无序水平，并从光子路径相关性和产生效率的角度分析了其影响。对于中等程度的无序，我们证明了所产生的双光子态和产生速率是保留的。然而，我们发现，尽管拓扑模式的线性特性仍然受到保护，但对于更高水平的无序，量子相关性受到显著影响。
We present a theoretical study on the generation of photon pairs via spontaneous four-wave mixing in a waveguide array supporting topologically protected guided modes. Following a statistical approach, we introduce incremental levels of disorder in the waveguide positions and analyze the effects in terms of photon path correlations and generation efficiency. For moderate level of disorder, we show that the generated two-photon state as well as the generation rate is preserved. However, we find that for higher level of disorder quantum correlations are significantly affected, despite the fact that the linear properties of the topological mode are still protected.