论文标题
硅电路量子电动力学的裂闸空腔耦合器
Split-Gate Cavity Coupler for Silicon Circuit Quantum Electrodynamics
论文作者
论文摘要
最近在硅双重量子点（DQD）中实现了连贯的电荷光子和自旋光子耦合。在这里，我们演示了一个多功能的分裂腔腔耦合器，该腔耦合器允许多个DQD耦合到同一微波炉。腔传输的测量值与水平引起的函数产生电荷腔耦合率$ g_c/2π$ = 58 MHz，电荷分流率$γ_C/2π$ = 36 MHz，并且腔衰减率$κ/2π$ = 1.2 MHz。电荷腔耦合速率与设备模拟非常吻合。我们的耦合技术可以扩展，以使多个DQD同时耦合到相同的腔模式，从而使用微波频率光子打开了半导体矩形远程耦合的门。
Coherent charge-photon and spin-photon coupling has recently been achieved in silicon double quantum dots (DQD). Here we demonstrate a versatile split-gate cavity-coupler that allows more than one DQD to be coupled to the same microwave cavity. Measurements of the cavity transmission as a function of level detuning yield a charge cavity coupling rate $g_c/2π$ = 58 MHz, charge decoherence rate $γ_c/2π$ = 36 MHz, and cavity decay rate $κ/2π$ = 1.2 MHz. The charge cavity coupling rate is in good agreement with device simulations. Our coupling technique can be extended to enable simultaneous coupling of multiple DQDs to the same cavity mode, opening the door to long-range coupling of semiconductor qubits using microwave frequency photons.
