论文标题
通过集体纠缠测试进行纠缠交换的实验诊断
Experimental diagnostics of entanglement swapping by a collective entanglement test
论文作者
论文摘要
该论文报告了通过集体纠缠证人的纠缠交换方案实验诊断的报告。我们的方法适合检测在制备量子状态，量子通信通道和不完善钟形投影中发生的干扰。更具体地说，我们证明我们的方法可以通过观察四个概率并估算集体纠缠见证人来区分诸如去极化，相阻尼，振幅阻尼和不完美的钟形测量之类的干扰。由于纠缠交换是量子中继器，量子继电器，与设备无关的量子通信或纠缠辅助误差校正的关键程序，因此这可以帮助更快，实际解决与交易质量相关的问题，因为我们的方法需要较少的测量方法，而不是其他诊断手段。
The paper reports on experimental diagnostics of entanglement swapping protocol by means of collective entanglement witness. Our approach is suitable to detect disturbances occurring in the preparation of quantum states, quantum communication channel and imperfect Bell-state projection. More specifically we demonstrate that our method can distinguish disturbances such as depolarization, phase-damping, amplitude-damping and imperfect Bell-state measurement by observing four probabilities and estimating collective entanglement witness. Since entanglement swapping is a key procedure for quantum repeaters, quantum relays, device-independent quantum communications or entanglement assisted error correction, this can aid in faster and practical resolution of quality-of-transmission related problems as our approach requires less measurements then other means of diagnostics.
