AI 中文总结
本文提出基于能带结构工程的二维压电光力换能器设计，实现了低噪声、双向换能及量子基态附近的声子-光子对产生，为超导量子比特的远距离纠缠提供了关键进展。
AI 中文摘要
光量子网络为连接远距离超导量子处理器提供了天然途径，可实现分布式量子计算、传感与通信。压电光力换能器是可扩展微波-光量子接口的核心候选方案之一，但此前的一维压电光力换能器受光吸收诱导的加热及由此产生的热噪声限制。二维光力晶体因更好的热锚定实现了大幅提升的热性能，但其结构复杂性迄今阻碍了全集成二维换能器的实现。本文通过基于能带结构工程的新设计策略克服了这一挑战，制备了器件并对其响应进行实验表征：室温下测得机电阻尼率为4.6 kHz，在10 mK下通过引线键合至多模微波谐振器测得机电耦合率为0.17 MHz；连续波操作下双向换能的校准内部效率为0.85%，同时在量子基态附近实现了脉冲声子-光子对产生。我们的研究为实现用于纠缠远距离超导量子比特的高效率、低噪声换能器迈出了重要一步。
英文摘要
Optical quantum networks provide a natural route for connecting distant superconducting quantum processors, enabling distributed quantum computation, sensing, and communication. Piezo-optomechanical transducers are among the leading candidates for scalable microwave-to-optical quantum interfaces. However, prior one-dimensional piezo-optomechanical transducers remain limited by optical-absorption-induced heating and the resulting thermal noise. Two-dimensional optomechanical crystals offer substantially improved thermalization from better thermal anchoring, but their structural complexity has so far hindered the realization of a fully integrated two-dimensional transducer. Here, we overcome this challenge with a new design strategy based on band structure engineering. We fabricate the devices and experimentally characterize the response, measuring an electromechanical damping rate of 4.6 kHz at room temperature and electromechanical coupling rate of 0.17 MHz by wire-bonding to a multi-mode microwave resonator at 10 mK. Bidirectional transduction is performed with a calibrated internal efficiency of 0.85\% in the continuous-wave operation, alongside pulsed photon-phonon pair generation near its quantum ground state. Our results represent a significant step toward high-efficiency and low-noise transducers for entangling remote superconducting qubits.
