论文标题
用超导处理器的电路中的新兴光子对传播
Emergent photon pair propagation in circuit QED with superconducting processors
论文作者
论文摘要
我们提出了一种在三级超导电路阵列中实现光子对传播的方法。假设实验可访问的三级人工原子具有强烈的非谐度性，在一个维度和二维中通过微波传输线结合，我们分析了系统的电路量子电动力学（QED）。我们明确地表明，对于不同水平之间的耦合比的适当选择，抑制了单个光子传播，并且出现了光子对的传播。光子对的这种传播导致与系统相关的极化子的一对超流体。我们计算了极化量子物质的完整相图，揭示了对对应于强度耦合方案中偏振子密度相对应的偏振子密度对应于偏振子密度对应于真空中的对超氟相位。
We propose a method to achieve photon pair propagation in an array of three-level superconducting circuits. Assuming experimentally accessible three-level artificial atoms with strong anharmonicity coupled via microwave transmission lines in both one and two dimensions we analyze the circuit Quantum Electrodynamics(QED) of the system. We explicitly show that for a suitable choice of the coupling ratio between different levels, the single photon propagation is suppressed and the propagation of photon pairs emerges. This propagation of photon pairs leads to the pair superfluid of polaritons associated to the system. We compute the complete phase diagram of the polariton quantum matter revealing the pair superfluid phase which is sandwiched between the vacuum and the Mott insulator state corresponding to the polariton density equal to two in the strong coupling regime.
