论文标题
使用混合动力量子的高光子损失耐量子计算
Highly photon loss tolerant quantum computing using hybrid qubits
论文作者
论文摘要
我们研究了使用光学混合量子台的拓扑量子计算方案，并与以前的全光方案进行了广泛的比较。我们表明，Omkar {\ it等人}报告的光子损耗阈值。 [物理。莱特牧师。 125，060501（2020）]可以通过采用选择后和基于多孔状态测量的纠缠操作来进一步改善，以创建特殊的群集状态，称为Raussendorf lattice进行拓扑量子计算。特别是，光子损耗阈值可增强高达$ 5.7 \ times10^{ - 3} $，这是根据合理的错误模型报告的最高报告值。与上述参考资料中的计划相比，该计划以消费更多的资源的价格获得了这种改进。与其他已知的耐故障量子计算相比，该方案与其他已知的光学方案相比仍然具有资源效率。
We investigate a scheme for topological quantum computing using optical hybrid qubits and make an extensive comparison with previous all-optical schemes. We show that the photon loss threshold reported by Omkar {\it et al}. [Phys. Rev. Lett. 125, 060501 (2020)] can be improved further by employing postselection and multi-Bell-state-measurement based entangling operation to create a special cluster state, known as Raussendorf lattice for topological quantum computation. In particular, the photon loss threshold is enhanced up to $5.7\times10^{-3}$, which is the highest reported value given a reasonable error model. This improvement is obtained at the price of consuming more resources by an order of magnitude, compared to the scheme in the aforementioned reference. Neverthless, this scheme remains resource-efficient compared to other known optical schemes for fault-tolerant quantum computation.
