论文标题
用模式的激光驱动低临界电流约瑟夫森连接阵列
Driving a low critical current Josephson junction array with a mode-locked laser
论文作者
论文摘要
我们演示了由模式锁定激光器和光学时段多路复用器产生的光脉冲驱动的约瑟夫森连接阵列（JJA）的操作。商业光电二极管将光脉冲转换为液氦气中的电脉冲，从JJA几个CM。我们定制模式锁定激光器的性能足以在多个shapiro步骤下驱动具有低临界电流的JJA。我们的光学方法是快速和节能的脉冲驱动器的潜在推动因素，而无需昂贵的高带宽电脉冲模式发生器，而没有高带宽电缆电缆跨度越过的跨度跨度阶段。我们的测量和模拟激发了使用例如Flip-Chip技术的光电二极管和JJAS的改进整合，以提高对脉搏驱动的Josephson任意波形合成器（JAWS）的理解和忠诚度。
We demonstrate the operation of Josephson junction arrays (JJA) driven by optical pulses generated by a mode-locked laser and an optical time-division multiplexer. A commercial photodiode converts the optical pulses into electrical ones in liquid helium several cm from the JJA. The performance of our custom-made mode-locked laser is sufficient for driving a JJA with low critical current at multiple Shapiro steps. Our optical approach is a potential enabler for fast and energy-efficient pulse drive without expensive high-bandwidth electrical pulse pattern generator, and without high-bandwidth electrical cabling crossing temperature stages. Our measurements and simulations motivate an improved integration of photodiodes and JJAs using, e.g., flip-chip techniques, in order to improve both the understanding and fidelity of pulse-driven Josephson Arbitrary Waveform Synthesizers (JAWS).
