标题： 利用悬浮无腔光机械效应的单光子传递 显示英文标题

标题： Single-photon transfer using levitated cavityless optomechanics

摘要： 我们理论探讨了一种量子存储器，该存储器使用在光学偶极子陷阱中悬浮的单个纳米颗粒并受到反馈冷却的作用。 该协议通过将单个光子量子态存储和检索到悬浮无腔光机械系统中的机械模式中来实现。 我们根据保真度、威格纳函数和零延迟二阶自相关函数来描述光子-声子-光子转换的有效性。 对于实验上可访问的参数，我们的数值结果表明输入信号光子的量子态到检索光子的量子态的转换具有鲁棒性。 我们还表明，只要使用比机械阻尼时间更短的强控制脉冲，系统中就可能实现高保真度的单光子波长转换。 我们的工作为利用悬浮光机械系统在量子信息处理中的应用开辟了可能性。 显示英文摘要

摘要： We theoretically explore a quantum memory using a single nanoparticle levitated in an optical dipole trap and subjected to feedback cooling. This protocol is realized by storing and retrieving a single photon quantum state from a mechanical mode in levitated cavityless optomechanics. We describe the effectiveness of the photon-phonon-photon transfer in terms of the fidelity, the Wigner function, and the zero-delay second-order autocorrelation function. For experimentally accessible parameters, our numerical results indicate robust conversion of the quantum states of the input signal photon to those of the retrieved photon. We also show that high fidelity single-photon wavelength conversion is possible in the system as long as intense control pulses shorter than the mechanical damping time are used. Our work opens up the possibility of using levitated optomechanical systems for applications of quantum information processing.