Chip Pub Date : 2022-03-01 DOI: 10.1016/j.chip.2022.100006

An-Qi Hu , Qiao-Li Liu , Xia Guo

引用次数: 4

Topologically Protected Polarization Quantum Entanglement on a Photonic Chip 光子芯片上的拓扑保护偏振量子纠缠

Chip Pub Date : 2022-03-01 DOI: 10.1016/j.chip.2022.100003

Yao Wang , Yong-Heng Lu , Jun Gao , Yi-Jun Chang , Ruo-Jing Ren , Zhi-Qiang Jiao , Zhe-Yong Zhang , Xian-Min Jin

{"title":"Topologically Protected Polarization Quantum Entanglement on a Photonic Chip","authors":"Yao Wang , Yong-Heng Lu , Jun Gao , Yi-Jun Chang , Ruo-Jing Ren , Zhi-Qiang Jiao , Zhe-Yong Zhang , Xian-Min Jin","doi":"10.1016/j.chip.2022.100003","DOIUrl":"10.1016/j.chip.2022.100003","url":null,"abstract":"<div><p>Quantum entanglement, as the strictly non-classical phenomenon, is the kernel of quantum computing and quantum simulation, and has been widely applied ranging from fundamental tests of quantum physics to quantum information processing. Meanwhile, the topological phase is found inherently capable of protecting physical fields from unavoidable fabrication-induced disorder, which inspires the potential application of topological protection to quantum states. Here, we present the experimental demonstration of topologically protected quantum entangled states on a photonic chip. The process tomography shows that quantum entanglement can be well preserved by the topological states even when the chip material introduces disorder and relative polarization rotation in phase space. Our work links the fields of materials, topological science and quantum physics, opening the door to wide applications of topological enhancement in quantum regime.</p></div>","PeriodicalId":100244,"journal":{"name":"Chip","volume":"1 1","pages":"Article 100003"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2709472322000016/pdfft?md5=e710eb243b03493fda36945da7d2b4f3&pid=1-s2.0-S2709472322000016-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89069831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Generation and dynamic manipulation of frequency degenerate polarization entangled Bell states by a silicon quantum photonic circuit 硅量子光子电路频率简并极化纠缠贝尔态的产生和动态操纵

Chip Pub Date : 2022-03-01 DOI: 10.1016/j.chip.2021.100001

Dong-Ning Liu , Jing-Yuan Zheng , Ling-Jie Yu , Xue Feng , Fang Liu , Kai-Yu Cui , Yi-Dong Huang , Wei Zhang

{"title":"Generation and dynamic manipulation of frequency degenerate polarization entangled Bell states by a silicon quantum photonic circuit","authors":"Dong-Ning Liu , Jing-Yuan Zheng , Ling-Jie Yu , Xue Feng , Fang Liu , Kai-Yu Cui , Yi-Dong Huang , Wei Zhang","doi":"10.1016/j.chip.2021.100001","DOIUrl":"10.1016/j.chip.2021.100001","url":null,"abstract":"<div><p>A silicon quantum photonic circuit was proposed and realized for the generation and the dynamic manipulation of telecom-band frequency-degenerate polarization entangled Bell states. Frequency degenerate biphoton states were generated in four silicon waveguides by spontaneous four wave mixing. They were transformed to polarization entangled Bell states through on-chip quantum interference and quantum superposition, and then coupled to optical fibers. The property of polarization entanglement in generated photon pairs was demonstrated by two-photon interference under two non-orthogonal polarization bases. The output state could be dynamically switched between two Bell states, which was demonstrated by the simplified Bell state measurement. The experiment results indicated that the manipulation speed supported a modulation rate of several tens kHz, showing its potential on applications of quantum communication and quantum information processing requiring Bell state encoding and dynamic control.</p></div>","PeriodicalId":100244,"journal":{"name":"Chip","volume":"1 1","pages":"Article 100001"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2709472321000010/pdfft?md5=f1332caedc9361676124851ccb62e7e1&pid=1-s2.0-S2709472321000010-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76049974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Advances in near-infrared avalanche diode single-photon detectors 近红外雪崩二极管单光子探测器的研究进展

Chip Pub Date : 2022-03-01 DOI: 10.1016/j.chip.2022.100005

Chen Liu , Hai-Feng Ye , Yan-Li Shi

引用次数: 9

Low-depth optical neural networks 低深度光神经网络

Chip Pub Date : 2022-03-01 DOI: 10.1016/j.chip.2021.100002

Xiao-Ming Zhang , Man-Hong Yung

引用次数: 1

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