Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system

Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system

We propose effective fusion schemes for stationary electronic W state and flying photonic W state, respectively, by using the quantum-dot-microcavity coupled system. The present schemes can fuse a n-qubit W state and a m-qubit W state to a (m + n − 1)-qubit W state, that is, these schemes can be use...

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Main Authors: Han, Xue, Hu, Shi, Guo, Qi, Wang, Hong-Fu, Zhu, Ai-Dong, Zhang, Shou
Format: Online
Language:English
Published: Nature Publishing Group 2015
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642528/
id pubmed-4642528
recordtype oai_dc
spelling pubmed-46425282015-11-20 Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system Han, Xue Hu, Shi Guo, Qi Wang, Hong-Fu Zhu, Ai-Dong Zhang, Shou Article We propose effective fusion schemes for stationary electronic W state and flying photonic W state, respectively, by using the quantum-dot-microcavity coupled system. The present schemes can fuse a n-qubit W state and a m-qubit W state to a (m + n − 1)-qubit W state, that is, these schemes can be used to not only create large W state with small ones, but also to prepare 3-qubit W states with Bell states. The schemes are based on the optical selection rules and the transmission and reflection rules of the cavity and can be achieved with high probability. We evaluate the effect of experimental imperfections and the feasibility of the schemes, which shows that the present schemes can be realized with high fidelity in both the weak coupling and the strong coupling regimes. These schemes may be meaningful for the large-scale solid-state-based quantum computation and the photon-qubit-based quantum communication. Nature Publishing Group 2015-08-05 /pmc/articles/PMC4642528/ /pubmed/26242356 http://dx.doi.org/10.1038/srep12790 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Han, Xue
Hu, Shi
Guo, Qi
Wang, Hong-Fu
Zhu, Ai-Dong
Zhang, Shou
spellingShingle Han, Xue
Hu, Shi
Guo, Qi
Wang, Hong-Fu
Zhu, Ai-Dong
Zhang, Shou
Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system
author_facet Han, Xue
Hu, Shi
Guo, Qi
Wang, Hong-Fu
Zhu, Ai-Dong
Zhang, Shou
author_sort Han, Xue
title Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system
title_short Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system
title_full Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system
title_fullStr Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system
title_full_unstemmed Effective W-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system
title_sort effective w-state fusion strategies for electronic and photonic qubits via the quantum-dot-microcavity coupled system
description We propose effective fusion schemes for stationary electronic W state and flying photonic W state, respectively, by using the quantum-dot-microcavity coupled system. The present schemes can fuse a n-qubit W state and a m-qubit W state to a (m + n − 1)-qubit W state, that is, these schemes can be used to not only create large W state with small ones, but also to prepare 3-qubit W states with Bell states. The schemes are based on the optical selection rules and the transmission and reflection rules of the cavity and can be achieved with high probability. We evaluate the effect of experimental imperfections and the feasibility of the schemes, which shows that the present schemes can be realized with high fidelity in both the weak coupling and the strong coupling regimes. These schemes may be meaningful for the large-scale solid-state-based quantum computation and the photon-qubit-based quantum communication.
publisher Nature Publishing Group
publishDate 2015
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642528/
_version_ 1613500347159937024

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