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error-detected single-photon quantum routing using a quantum dot and a double-sided microcavity system

Chinese Physics B 2019年第2期28卷 111-116页

作者： A-Peng Liu Liu-Yong Cheng Qi Guo Shi-Lei Su Hong-Fu Wang Shou Zhang Shanxi Institute of Technology School of Physics and Information Engineering Shanxi Normal University College of Physics and Electronics Engineering Shanxi University School of Physics and Engineering Zhengzhou University Department of Physics College of ScienceYanbian University

Based on a hybrid system consisting of a quantum dot coupled with a double-sided micropillar cavity, we investigate the implementation of an error-detected photonic quantum routing controlled by the other photon. The computational errors from unexpected experimental imperfections are heralded by single photon detections, resulting in a unit fidelity for the present scheme, so that this scheme is intrinsically robust. We discuss the performance of the scheme with currently achievable experimental parameters. Our results show that the present scheme is efficient. Furthermore, our scheme could provide a promising building block for quantum networks and distributed quantum information processing in the future.

关键词： quantum routing error-detected quantum computation quantum information processing

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error-detected N-photon cluster state generation based on the controlled-phase gate using a quantum dot in an optical microcavity

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Frontiers of physics 2020年第2期15卷 1-11页

作者： Lei-Xia Liang Yan-Yan Zheng Yuan-Xia Zhang Mei Zhang Department of Physics Applied Optics Beijing Area Major LaboratoryBeijing Normal UniversityBeijing 100875China School of Physics and Electronic Information Yan’an UniversityYan’an 716000China

We propose a scheme for error-detected generation of an AT-photon cluster state with a quantum dot(QD)embedded in a single-sided optical niicrocavity(QD-cavity system).The basic structure of this scheme is an error-detected controlled-phase(C-phase)gate on the hybrid electron-photon *** this scheme,the fidelity of N-photon cluster state generation can be reached imity even if low-Q cavity and cavity leakage are *** using error detecting,the generation of an AT-photon cluster state can be performed by repeating until success,which also leads to a high success probability,compared with other schemes assisted by the QD-cavity *** error-detected generation of an N-photon cluster state in the highly controllable way may benefit on the quantum network in the future.

关键词： controlled-phase gate cluster state error-detected QD-cavity system

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