论文标题
室温量子中心的提案，该量子中心和氮气接种中心和光学力学
Proposal for room-temperature quantum repeaters with nitrogen-vacancy centers and optomechanics
论文作者
论文摘要
我们提出了一个可以在环境条件下运行的量子中继器架构。我们的提案建立在基于基于氮呈现中心的非晶自旋光子界面方面的最新进展，即使在室温和光学力学下，它们也具有极好的自旋相干时间，从而避免了与声子相关的变形，并且还允许发射的光子在电信带中。我们应用光子数分解方法来量化两个远程电子旋转之间建立的纠缠的保真度和效率。我们描述了如何将纠缠存储在核旋转中，并通过准确确定的纠缠交换操作涉及电子和核自旋，从而延伸到长距离。我们此外提出的方案是在室温下使用自旋 - 反式力学接口在室温下实现旋转状态的高保真读数。我们的工作表明，在室温下运行的固态组件制成的长距离量子网络在当前的技术能力范围内。
We propose a quantum repeater architecture that can operate under ambient conditions. Our proposal builds on recent progress towards non-cryogenic spin-photon interfaces based on nitrogen-vacancy centers, which have excellent spin coherence times even at room temperature, and optomechanics, which allows to avoid phonon-related decoherence and also allows the emitted photons to be in the telecom band. We apply the photon number decomposition method to quantify the fidelity and the efficiency of entanglement established between two remote electron spins. We describe how the entanglement can be stored in nuclear spins and extended to long distances via quasi-deterministic entanglement swapping operations involving the electron and nuclear spins. We furthermore propose schemes to achieve high-fidelity readout of the spin states at room temperature using the spin-optomechanics interface. Our work shows that long-distance quantum networks made of solid-state components that operate at room temperature are within reach of current technological capabilities.
