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Realizing an efficient fusion gate for W states with cross-Kerr nonlinearities and QD-cavity coupled system

Zeitschrift:: Quantum Information Processing > Ausgabe 6/2015

Autoren:: Na Li, Jie Yang, Liu Ye

Abstract

We propose a new scheme for fusing two arbitrary-size photonic W states encoded by polarizations to generate a larger W state. With the help of cross-Kerr nonlinearities and a quantum dot in an optical cavity (QD-cavity coupled system), we can realize the fusion of W states with a high success probability. In addition, the scheme does not need any ancillary photon, and it can also be applied to fuse two Bell states. The scheme can be realized with current experimental technology.

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Titel: Realizing an efficient fusion gate for W states with cross-Kerr nonlinearities and QD-cavity coupled system
Autoren:: Na Li
Jie Yang
Liu Ye
Publikationsdatum: 01.06.2015
DOI: https://doi.org/10.1007/s11128-015-0977-1
Verlag: Springer US
Zeitschrift: Quantum Information Processing
Ausgabe 6/2015
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332

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