AI 中文总结
该研究设计了含双量子点与超导腔的器件，观测到自旋量子比特与腔的多次真空拉比振荡，级联振荡可实现量子比特间的光子介导能量转移，为光-物质相互作用及量子比特对接提供基础。
AI 中文摘要
单个光子与单个自旋之间的真空拉比振荡展示了在单个能量量子层面利用光-物质相互作用的能力。自从在栅极定义的量子点中观测到强自旋-光子耦合以来，在时域中探测这种相互作用已成为主要目标。在此，我们精心设计了一种器件，该器件包含两个空间分离的、容纳单电子自旋量子比特的双量子点，以及一个用于容纳微波光子的超导腔。我们观测到每个自旋量子比特与腔之间的多次真空拉比振荡。通过级联涉及两个自旋的真空拉比振荡，一个量子比特中的能量激发可以作为光子发射，然后转移到另一个量子比特。当发射单个光子时，腔会处于福克态，从而导致真空拉比频率加速。这些结果不仅为探索光-物质相互作用，还为将半导体自旋量子比特与光子链路对接提供了基础组件。
英文摘要
Vacuum Rabi oscillations between a single photon and a single spin demonstrate the capability of harnessing light-matter interaction at the level of a single quantum of energy. Since the observation of strong spin-photon coupling in gate-defined quantum dots, probing this interaction in the time-domain has been a major objective. Here, we carefully engineer a device composed of two spatially separated double quantum dots hosting single electron spin qubits and a superconducting cavity to accommodate microwave photons. We observe multiple vacuum Rabi oscillations between each spin qubit and the cavity. By concatenating vacuum Rabi oscillations involving the two spins, an energy excitation in one qubit can be emitted as a photon and then transferred to the other qubit. When a single photon is emitted, the cavity is prepared in a Fock state, leading to an accelerated vacuum Rabi frequency. These results serve as building blocks not only in exploring light-matter interactions, but also in interfacing semiconductor spin qubits to photonic links.
