Xue-Tong Sun, Jing-Xue Zhang, Yu-Ying Gu, Hai-Rui Wei, Guo-Zhu Song
{"title":"Heralded high-fidelity photonic hyper-CNOT gates with quantum scattering in one-dimensional waveguides","authors":"Xue-Tong Sun, Jing-Xue Zhang, Yu-Ying Gu, Hai-Rui Wei, Guo-Zhu Song","doi":"10.1007/s11128-024-04533-4","DOIUrl":null,"url":null,"abstract":"<div><p>Hyper-parallel quantum computation offers irreplaceable advantages in quantum information processing (QIP). In this article, based on the scattering property of photons off emitters coupled to one-dimensional (1D) waveguides, we propose three heralded schemes for implementing hyper-controlled-not (hyper-CNOT) gates on two-photon systems. The four qubits of our hyper-CNOT gates are encoded on the spatial-mode and the polarization degrees of freedom (DOFs) of two-photon systems. In our schemes, the faulty scattering events between photons and quantum emitters caused by system imperfections can be detected and discarded. Besides, no auxiliary photons are needed during the process, reducing the operation time and resource consumption in QIP. We also discuss the success probabilities and fidelities of our schemes, concluding that our schemes may be feasible under current technology.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"23 10","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Quantum Information Processing","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s11128-024-04533-4","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, MATHEMATICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Hyper-parallel quantum computation offers irreplaceable advantages in quantum information processing (QIP). In this article, based on the scattering property of photons off emitters coupled to one-dimensional (1D) waveguides, we propose three heralded schemes for implementing hyper-controlled-not (hyper-CNOT) gates on two-photon systems. The four qubits of our hyper-CNOT gates are encoded on the spatial-mode and the polarization degrees of freedom (DOFs) of two-photon systems. In our schemes, the faulty scattering events between photons and quantum emitters caused by system imperfections can be detected and discarded. Besides, no auxiliary photons are needed during the process, reducing the operation time and resource consumption in QIP. We also discuss the success probabilities and fidelities of our schemes, concluding that our schemes may be feasible under current technology.
期刊介绍：
Quantum Information Processing is a high-impact, international journal publishing cutting-edge experimental and theoretical research in all areas of Quantum Information Science. Topics of interest include quantum cryptography and communications, entanglement and discord, quantum algorithms, quantum error correction and fault tolerance, quantum computer science, quantum imaging and sensing, and experimental platforms for quantum information. Quantum Information Processing supports and inspires research by providing a comprehensive peer review process, and broadcasting high quality results in a range of formats. These include original papers, letters, broadly focused perspectives, comprehensive review articles, book reviews, and special topical issues. The journal is particularly interested in papers detailing and demonstrating quantum information protocols for cryptography, communications, computation, and sensing.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
