Integrated Quantum Photonics and Opto-mechanics

纳米机械设备有望彻底改变我们测量极小力和位移的能力。当与纳米光子元件相结合时，它们具有在芯片上实现完整测量系统的巨大潜力。虽然纳米器件已经发现了大量的经典应用，但它们在基础物理研究中的应用却很少被探索。本计画旨在研究量子领域的奈米光机械元件。梯度光学力将被用作设备架构的操作原理，其中量子光学和光机械元件都以与集成电路中的电子元件大致相同的方式布置。为了观察光机械量子效应，量子光输入/输出端口将以片上单光子源和超导单光子探测器的形式发展。超轻、高频纳米级光机械谐振器将产生机械自由度。纳米机械运动将通过倏逝波耦合到光子电路中读出，这将用于量子通信和量子信息处理。所提出的架构将完全基于CMOS兼容的制造工艺，因此将具有高产量和高可扩展性。在单个芯片上结合量子光学和机械量子系统将最终在非实验室环境中实现强大的量子信息处理。

Nano-mechanical devices promise to revolutionize our ability to measure extremely small forces and displacements. They hold tremendous potential for the realization of complete measurement systems on a chip when combined with nano-photonic components. While nanoscale devices have found a wealth of classical applications, their use for the investigation of fundamental physics has been very little explored. This project aims to investigate nanoscale opto-mechanical devices in the quantum regime. The gradient optical force will be used as the operating principle of a device architecture in which both quantum optical and opto-mechanical elements are laid out in much the same fashion as electronic components in integrated circuits. In order to observe opto-mechanical quantum effects, quantum optical input/output ports will be developed in the form of on-chip single photon sources and superconducting single photon detectors. Ultra-light, high frequency nano-scale opto-mechanical resonators will yield mechanical degrees of freedom. The nano-mechanical motion will be read out through evanescent coupling to photonic circuits, which will be explored for quantum communication and quantum information processing. The proposed architecture will be solely based on CMOS compatible fabrication processes and thus will feature high yield and high scalability. Combining quantum optical and mechanical quantum systems on a single chip will eventually enable robust quantum information processing in a non-laboratory setting.