Quantum-enabled operation of a microwave-optical interface.
Quantum-enabled operation of a microwave-optical interface.
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微波-光学接口的量子使能操作。
DOI：
10.1038/s41467-022-28924-2
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发表时间：
2022-03-11
影响因子：
16.6
通讯作者：
Fink JM
中科院分区：
文献类型：
--
作者：
Sahu R;Hease W;Rueda A;Arnold G;Qiu L;Fink JM
固态微波系统为快速量子逻辑和传感提供了强大的相互作用，但电信波长的光子是高密度、低损耗量子互连的理想选择。能够利用单光子效应的通用接口需要 <； 1输入噪声量子，但由于效率低或泵浦加热，这一点一直难以捉摸。在这里，我们展示了纳秒时间尺度上的相干电光调制，仅使用微波输入噪声光子，总双向转换效率为8.7%(或高达15%)，这是近期宣布的量子网络协议所需的。使用短且高功率的光抽运脉冲还使得电光相互作用的近单位协作性，导致高达99.5%的内部纯转换效率。再加上低模式占有率，这为电光激光冷却和真空放大提供了证据，正如十年前所预测的那样。电路和光之间的量子态的忠实转换需要在转换过程中添加不到一个输入噪声光子。在这里，作者证明了这一点基于相干电光上转换，转换效率为15%。
Solid-state microwave systems offer strong interactions for fast quantum logic and sensing but photons at telecom wavelength are the ideal choice for high-density low-loss quantum interconnects. A general-purpose interface that can make use of single photon effects requires < 1 input noise quanta, which has remained elusive due to either low efficiency or pump induced heating. Here we demonstrate coherent electro-optic modulation on nanosecond-timescales with only microwave input noise photons with a total bidirectional transduction efficiency of 8.7% (or up to 15% with ), as required for near-term heralded quantum network protocols. The use of short and high-power optical pump pulses also enables near-unity cooperativity of the electro-optic interaction leading to an internal pure conversion efficiency of up to 99.5%. Together with the low mode occupancy this provides evidence for electro-optic laser cooling and vacuum amplification as predicted a decade ago. Faithful conversion of quantum states between electrical circuits and light requires adding less than one input noise photon during conversion. Here, the authors demonstrate this based on coherent electro-optic upconversion with a transduction efficiency of 15%.
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影响因子：
16.6
作者：
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通讯作者：
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