论文标题
用杂化机电探针计数量子非约束光子计数
Quantum Nondemolition Photon Counting With a Hybrid Electromechanical Probe
论文作者
论文摘要
光子的量子非态度（QND）测量是在量子光学和量子信息处理领域的努力。在这里，我们提出了一个新型的混合光电力学平台，该平台将腔体系统与QND光子计数的混合机电探针集成在一起。我们的协议以机械模式介导的非扰动电流色散耦合为基础，通过探针的电流 - 电压特性来执行QND光子计数测量。特别是，我们表明，差分电导的峰值电压偏移线性取决于光子占用数，从而提供了对光子数的敏感度量，尤其是在强的光学耦合方案中。鉴于我们提出的混合系统与最先进的实验技术兼容，因此我们讨论了其实现并预测量子光学和北极星物理学中的应用。
Quantum nondemolition (QND) measurements of photons is a much pursued endeavor in the field of quantum optics and quantum information processing. Here we propose a novel hybrid optoelectromechanical platform that integrates a cavity system with a hybrid electromechanical probe for QND photon counting. Building upon a mechanical-mode-mediated nonperturbative electro-optical dispersive coupling, our protocol performs the QND photon counting measurement by means of the current-voltage characteristics of the probe. In particular, we show that the peak voltage shift of the differential conductance is linearly dependent on the photon occupation number, thus providing a sensitive measure of the photon number, especially in the strong optomechanical coupling regime. Given that our proposed hybrid system is compatible with state-of-the-art experimental techniques, we discuss its implementations and anticipate applications in quantum optics and polariton physics.
