论文标题
带错误检测的三光子超平行toffoli门具有状态选择性反射
Error-detected three-photon hyperparallel Toffoli gate with state-selective reflection
论文作者
论文摘要
我们基于偏振光子和腔氮含量（NV）中心系统之间的界面，为三光子系统提供了一个错误检测的超平行toffoli（超toffoli）门。与仅在一个DOF中的两个独立的三光系统中相比，该超高型门可用于同时执行双型和空间模式自由度（DOF）的双极化和空间模式自由度（DOF）。由于不完善的腔 - NV中心相互作用被基于检测器的先驱机制转化为可检测的故障，而不是不忠，因此可以实现量子超toffoli门的几乎单位保真度。通过回收程序，我们的方案对超托托里门的效率得到了进一步提高。同时，使用实验参数对栅极性能进行评估表明，当前的实验技术是可行的，并为量子计算提供了有希望的构建块。
We present an error-detected hyperparallel Toffoli (hyper-Toffoli) gate for a three-photon system based on the interface between polarized photon and cavity-nitrogen-vacancy(NV) center system. This hyper-Toffoli gate can be used to perform double Toffoli gate operations simultaneously on both the polarization and spatial-mode degrees of freedom (DoFs) of a three-photon system with a low decoherence, shorten operation time, and less quantum resources required, in compared with those on two independent three-photon systems in one DoF only. As the imperfect cavity-NV-center interactions are transformed into the detectable failures rather than infidelity based on the heralding mechanism of detectors, a near-unit fidelity of the quantum hyper-Toffoli gate can be implemented. By recycling the procedures, the efficiency of our protocol for the hyper-Toffoli gate is improved further. Meanwhile, the evaluation of gate performance with achieved experiment parameters shows that it is feasible with current experimental technology and provides a promising building block for quantum compute.
