Detecting topological phases of microwave photons in a circuit quantum electrodynamics lattice
Detecting topological phases of microwave photons in a circuit quantum electrodynamics lattice
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检测电路量子电动力学晶格中微波光子的拓扑相位
DOI：
10.1038/npjqi.2016.15
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发表时间：
2015-06
影响因子：
7.6
通讯作者：
Y. Wu
中科院分区：
文献类型：
--
作者：
Y. P. Wang;W. L. Yang;Y. Hu;Z. Y. Xue;Y. Wu
拓扑是描述电子系统的一个重要的自由度。近年来，它也带来了新的理论前沿和许多潜在的应用在光子学。然而，拓扑性质的验证在光子系统中是非常重要的，因为没有玻色子光子的量子化霍尔电导的直接模拟。本文提出了一种利用简单的参量耦合方法研究超导量子电路中的拓扑光子学的方案，该方案的灵活性可以使光子在正方形晶格上产生有效的原位可调人工规范场。我们进一步研究了光子的拓扑相位的检测。我们的想法利用边缘态模的奇异性质，在驱动-耗散竞争下产生新的晶格定态。通过对少数几个点的抽运和光子数的测量，不仅可以直接探测到边态模的空间和光谱特性，而且可以直接探测到边态模的动量甚至是任意值的整数拓扑量子数，从而明确地揭示了光子在晶格上的拓扑性质。
Topology is an important degree of freedom in characterising electronic systems. Recently, it also brings new theoretical frontiers and many potential applications in photonics. However, the verification of the topological nature is highly nontrivial in photonic systems, as there is no direct analogue of quantised Hall conductance for bosonic photons. Here we propose a scheme of investigating topological photonics in superconducting quantum circuits by a simple parametric coupling method, the flexibility of which can lead to the effective in situ tunable artificial gauge field for photons on a square lattice. We further study the detection of the topological phases of the photons. Our idea uses the exotic properties of the edge state modes, which result in novel steady states of the lattice under the driving-dissipation competition. Through the pumping and the photon-number measurements of merely few sites, not only the spatial and the spectral characters but also the momentums and even the integer topological quantum numbers with arbitrary values of the edge state modes can be directly probed, which reveal unambiguously the topological nature of photons on the lattice.
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影响因子：
4
作者：
A. Sirois;M. Castellanos-Beltran;M. Defeo;L. Ranzani;F. Lecocq;R. Simmonds;J. Teufel;J. Aumentado
通讯作者：
A. Sirois;M. Castellanos-Beltran;M. Defeo;L. Ranzani;F. Lecocq;R. Simmonds;J. Teufel;J. Aumentado
影响因子：
19.6
作者：
Maciejko, Joseph;Fiete, Gregory A.
通讯作者：
Fiete, Gregory A.
影响因子：
19.6
作者：
Hartmann, Michael J.;Brandao, Fernando G. S. L.;Plenio, Martin B.
通讯作者：
Plenio, Martin B.
影响因子：
64.8
作者：
Wang, Zheng;Chong, Yidong;Soljacic, Marin
通讯作者：
Soljacic, Marin
影响因子：
44.1
作者：
Paladino, E.;Galperin, Y. M.;Altshuler, B. L.
通讯作者：
Altshuler, B. L.