Hyperparallel optical quantum computation assisted by atomic ensembles embedded in double-sided optical cavities
Hyperparallel optical quantum computation assisted by atomic ensembles embedded in double-sided optical cavities
复制标题
嵌入双面光腔的原子系综辅助的超并行光量子计算
DOI：
10.1103/physreva.94.022343
复制
发表时间：
2016-08
影响因子：
2.9
通讯作者：
Gui-Lu Long
中科院分区：
文献类型：
--
作者：
Tao Li;Gui-Lu Long
我们提出了一种高效的、可扩展的、超并行的光子量子计算方案，其中光子量子比特在空间自由度(DOF)和每个光子的偏振自由度(DOF)中都被超编码。双光子系统的确定性超可控非(hyper-CNOT)门是通过在双面光学腔中嵌入原子系综的极化光子和集体自旋波(Magnon)之间的有趣接口来实现的，它的操作是传统量子CNOT门的两倍。此外，我们在N+1超编码光子上提出了一个紧凑的超CNOT门，它只有两个辅助腔-磁振子系统，并且可以用现有的实验技术忠实地构成。我们的方案使得超编码光子在量子计算和量子网络中的各种应用成为可能。
We propose an effective, scalable, hyperparallel photonic quantum computation scheme in which photonic qubits are hyperencoded both in the spatial degrees of freedom (DOF) and the polarization DOF of each photon. The deterministic hyper-controlled-not (hyper-cnot) gate on a two-photon system is attainable with our interesting interface between the polarized photon and the collective spin wave (magnon) of an atomic ensemble embedded in a double-sided optical cavity, and it doubles the operations in the conventional quantum cnot gate. Moreover, we present a compact hyper-cnot${}^{N}$ gate on $N+1$ hyperencoded photons with only two auxiliary cavity-magnon systems, not more, and it can be faithfully constituted with current experimental techniques. Our proposal enables various applications with the hyperencoded photons in quantum computing and quantum networks.