Quantum Computing, Communication, and Simulation IV最新文献

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Fiber-based higher dimensional quantum key distribution implementation using time-bin qudits 利用时空量子比特实现基于光纤的高维量子密钥分发
Quantum Computing, Communication, and Simulation IV Pub Date : 2024-03-13 DOI: 10.1117/12.3002155
Gokul Agasthilingam, Harinee Natarajan, Varun Raghunathan
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引用次数: 0
Advancing quantum networking: some tools and protocols for ideal and noisy photonic systems 推进量子网络:理想和噪声光子系统的一些工具和协议
Quantum Computing, Communication, and Simulation IV Pub Date : 2024-03-04 DOI: 10.1117/12.3023843
Jason Saied, Jeffrey Marshall, Namit Anand, Shon Grabbe, E. Rieffel
{"title":"Advancing quantum networking: some tools and protocols for ideal and noisy photonic systems","authors":"Jason Saied, Jeffrey Marshall, Namit Anand, Shon Grabbe, E. Rieffel","doi":"10.1117/12.3023843","DOIUrl":"https://doi.org/10.1117/12.3023843","url":null,"abstract":"Quantum networking at many scales will be critical to future quantum technologies and experiments on quantum systems. Photonic links enable quantum networking. They will connect co-located quantum processors to enable large-scale quantum computers, provide links between distant quantum computers to support distributed, delegated, and blind quantum computing, and will link distant nodes in space enabling new tests of fundamental physics. Here, we discuss recent work advancing photonic tools and protocols that support quantum networking. We provide analytical results and numerics for the effect of distinguishability errors on key photonic circuits; we considered a variety of error models and developed new metrics for benchmarking the quality of generated photonic states. We review a distillation protocol by one of the authors that mitigates distinguishability errors. We also review recent results by a subset of the authors on the efficient simulation of photonic circuits via approximation by coherent states. We study some interactions between the theory of universal sets, unitary t-designs, and photonics: while many of the results we state in this direction may be known to experts, we aim to bring them to the attention of the broader quantum information science community and to phrase them in ways that are more familiar to this community. We prove, translating a result from representation theory, that there are no non-universal infinite closed $2$-designs in $U(V)$ when $dim V geq 2$. As a consequence, we observe that linear optical unitaries form a $1$-design but not a 2-design. Finally, we apply a result of Oszmaniec and Zimbor'{a}s to prove that augmenting the linear optical unitaries with any nontrivial SNAP gate is sufficient to achieve universality.","PeriodicalId":517711,"journal":{"name":"Quantum Computing, Communication, and Simulation IV","volume":"18 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140285842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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