A number of current approaches to quantum and neuromorphic computing use superconductors as the basis of their platform or as a measurement component, and will need to operate at cryogenic temperatures. Semiconductor systems are typically proposed as a top-level control in these architectures, with low-temperature passive components and intermediary superconducting electronics acting as the direct interface to the lowest-temperature stages. The architectures, therefore, require a low-power superconductor-semiconductor interface, which is not currently available. Here we report a superconducting switch that is capable of translating low-voltage superconducting inputs directly into semiconductor-compatible (above 1,000 mV) outputs at kelvin-scale temperatures (1K or 4 K). To illustrate the capabilities in interfacing superconductors and semiconductors, we use it to drive a light-emitting diode (LED) in a photonic integrated circuit, generating photons at 1K from a low-voltage input and detecting them with an on-chip superconducting single-photon detector. We also characterize our device's timing response (less than 300 ps turn-on, 15 ns turn-off), output impedance (greater than 1MΩ), and energy requirements (0.18fJ/μm2,3.24mV/nW).

中文翻译：

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具有超高阻抗的超导热开关，用于将超导体连接到半导体。

当前用于量子和神经形态计算的许多方法都使用超导体作为其平台的基础或作为测量组件，并且将需要在低温下运行。半导体系统通常被建议作为这些体系结构中的顶层控制，其中低温无源组件和中间超导电子器件将充当最低温度级的直接接口。因此，这些架构需要低功率的超导体-半导体接口，该接口目前尚不可用。在这里，我们报告了一种超导开关，该开关能够在开尔文标度温度（1K或4 K）下将低压超导输入直接转换为半导体兼容（1,000 mV以上）的输出。为了说明超导体和半导体接口的功能，我们使用它来驱动光子集成电路中的发光二极管（LED），从低压输入产生1K的光子，并通过片上超导单芯片检测它们。光子探测器。我们还表征了设备的时序响应（开启时小于300 ps，关闭时小于15 ns），输出阻抗（大于1MΩ）和能量需求（0.18fJ /μm2,3.24mV/ nW）。