光子量子计算的增强钟态测量

IF 6.6 1区 物理与天体物理 Q1 PHYSICS, APPLIED
Nico Hauser, Matthias J. Bayerbach, Simone E. D’Aurelio, Raphael Weber, Matteo Santandrea, Shreya P. Kumar, Ish Dhand, Stefanie Barz
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引用次数: 0

摘要

基于融合的容错光子量子计算(FBQC)在很大程度上依赖于纠缠双光子测量,称为融合。这些融合可以通过线性光学投影贝尔态测量(bsm)来实现。这些线性光学bsm的成功率限制在50%,大大降低了FBQC方案的性能。FBQC的性能可以通过增加额外的资源来提高,从而获得更高的成功概率。在这里,我们使用一个4 × 4多端口分离器和一个额外的纠缠光子对实现了一个增强的BSM,允许成功概率高达75%。在我们的实验中,我们获得了我们的提升BSM的成功率为(69.3±0.3)%,明显超过了50%的限制。我们进一步证明了我们改进的BSM对FBQC的重要性,显示出对光子损失的鲁棒性增加了三倍,并显着降低了逻辑错误率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Boosted Bell-state measurements for photonic quantum computation

Boosted Bell-state measurements for photonic quantum computation

Fault-tolerant fusion-based photonic quantum computing (FBQC) greatly relies on entangling two-photon measurements, called fusions. These fusions can be realized using linear-optical projective Bell-state measurements (BSMs). These linear-optical BSMs are limited to a success probability of 50%, greatly reducing the performance of FBQC schemes. The performance of FBQC can be improved using boosting, thus achieving higher success probabilities by adding additional resources. Here, we realize a boosted BSM using a 4 × 4 multiport splitter and an additional entangled photon pair, allowing for a success probability of up to 75%. In our experiment, we obtain a success probability for our boosted BSM of (69.3 ± 0.3)%, clearly exceeding the 50% limit. We further demonstrate the significance of our boosted BSM for FBQC, showing a threefold increase in robustness to photon loss and a significant reduction of the logical error rates.

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来源期刊
npj Quantum Information
npj Quantum Information Computer Science-Computer Science (miscellaneous)
CiteScore
13.70
自引率
3.90%
发文量
130
审稿时长
29 weeks
期刊介绍: The scope of npj Quantum Information spans across all relevant disciplines, fields, approaches and levels and so considers outstanding work ranging from fundamental research to applications and technologies.
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