Continuous-Wave Single-Photon Transistor Based on a Superconducting Circuit
Continuous-Wave Single-Photon Transistor Based on a Superconducting Circuit
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DOI：
10.1103/physrevlett.117.140503
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发表时间：
2016-09-28
影响因子：
8.6
通讯作者：
Sorensen, Anders S.
中科院分区：
文献类型：
--
作者：
Kyriienko, Oleksandr;Sorensen, Anders S.
我们提出了一种微波频率单光子晶体管，它可以在连续波探测下工作，是一种有效的单微波光子探测器。它可以用一个三能级人工梯形原子与两个微波腔耦合的阻抗匹配系统来实现，微波腔与输入输出波导相连。使用上跃迁的经典驱动，我们找到了一个参数空间，其中一个腔上入射的单光子控制脉冲可以完全吸收到杂化激发态。这随后导致了一系列的量子跳跃在上流形和外观的光子通量离开第二腔通过一个单独的输入输出端口。该提议不需要探测信号的时间变化，因此对应于单光子晶体管的无源版本。所得到的装置对量子位退相过程是鲁棒的，对于大的非谐性具有低的暗计数率，并且可以使用当前技术容易地实现。
We propose a microwave frequency single-photon transistor which can operate under continuous wave probing and represents an efficient single microwave photon detector. It can be realized using an impedance matched system of a three level artificial ladder-type atom coupled to two microwave cavities connected to input-output waveguides. Using a classical drive on the upper transition, we find parameter space where a single photon control pulse incident on one of the cavities can be fully absorbed into hybridized excited states. This subsequently leads to series of quantum jumps in the upper manifold and the appearance of a photon flux leaving the second cavity through a separate input-output port. The proposal does not require time variation of the probe signals, thus corresponding to a passive version of a single-photon transistor. The resulting device is robust to qubit dephasing processes, possesses low dark count rate for large anharmonicity, and can be readily implemented using current technology.