论文标题
确定性和完整的超置钟状态分析在频率和时间间隔的自由度方面有助于自由度
Deterministic and complete hyperentangled Bell states analysis assisted by frequency and time interval degrees of freedom
论文作者
论文摘要
超置钟状态分析（HBSA）是某些超平行量子信息处理的必不可少的基础。我们提出了一个完整的确定性HBSA方案，该方案在两光子系统的空间和极化程度（DOF）中编码，并由基于固定频率的纠缠和时间间隔DOF辅助。奇偶校验信息可以通过光子对的不同时间间隔来区分基于空间和极化的高度接口，并且可以通过检测签名来区分相位信息。与以前的方案相比，通过引入时间间隔DOF，辅助纠缠的数量从二下减少到一个。此外，额外的频率和时间间隔DOF受到集体通道噪声的影响较小。
Hyperentangled Bell states analysis (HBSA) is an essential building block for certain hyper-parallel quantum information processing. We propose a complete and deterministic HBSA scheme encoded in spatial and polarization degrees of freedom (DOFs) of two-photon system assisted by a fixed frequency-based entanglement and a time interval DOF. The parity information the spatial-based and polarization-based hyper-entanglement can be distinguished by the distinct time intervals of the photon pairs, and the phase information can be distinguished by the detection signature. Compared with previous schemes, the number of the auxiliary entanglements is reduced from two to one by introducing time interval DOF. Moreover, the additional frequency and time interval DOFs suffer less from the collective channel noise.
