论文标题
用于超导纳米量量子界面的空腔压电力学
Cavity piezo-mechanics for superconducting-nanophotonic quantum interface
论文作者
论文摘要
混合量子系统对于实现分布式量子网络至关重要。特别是，以典型的超导量子频率运行的压电机械具有低热激发功能，并提供了一个吸引人的平台，用于桥接超导量子处理器和光学电信通道。但是，在低温温度下与足够强相互作用的低温和光学元素整合和光力元素仍然是一个巨大的挑战。在这里，我们报告了一个集成的超导型腔线压电 - 原始力学平台，其中10 GHz声子与超导和纳米光腔的共鸣与光子共同结合。受益于实现的大型压电机械合作（$ C_ \ Mathrm {Em} \ SIM7 $），以及通过脉冲光学泵增强的增强的光学机械耦合，我们通过观察高效的微波型光光子光子光子体转换来证明在低温温度下相干相互作用。该混合界面迈出了大规模量子通信的重大步骤，以及微波光子光子纠缠和由Gigahertz Phonon介导的量子传感的新探索。
Hybrid quantum systems are essential for the realization of distributed quantum networks. In particular, piezo-mechanics operating at typical superconducting qubit frequencies features low thermal excitations, and offers an appealing platform to bridge superconducting quantum processors and optical telecommunication channels. However, integrating superconducting and optomechanical elements at cryogenic temperatures with sufficiently strong interactions remains a tremendous challenge. Here, we report an integrated superconducting cavity piezo-optomechanical platform where 10-GHz phonons are resonantly coupled with photons in a superconducting and a nanophotonic cavities at the same time. Benefited from the achieved large piezo-mechanical cooperativity ($C_\mathrm{em}\sim7$) and the enhanced optomechanical coupling boosted by a pulsed optical pump, we demonstrate coherent interactions at cryogenic temperatures via the observation of efficient microwave-optical photon conversion. This hybrid interface makes a substantial step towards quantum communication at large scale, as well as novel explorations in microwave-optical photon entanglement and quantum sensing mediated by gigahertz phonons.
