Effective scheme for $$W$$ W -state fusion with weak cross-Kerr nonlinearities

Effective scheme for $$W$$ W -state fusion with weak cross-Kerr nonlinearities We propose a effective $$W$$ W -state fusion scheme with the help of weak cross-Kerr nonlinearities, which can fuse a $$n$$ n -qubit $$W$$ W state and a $$m$$ m -qubit $$W$$ W state to a $$(m+n-1)$$ ( m + n - 1 ) -qubit state without an ancillary photon. Specially, the present scheme can fuse two Bell states to create a three-qubit $$W$$ W state. We analyze the resource cost and the success probability of the scheme. The analysis shows that the present scheme requires less resource cost compared with the previous ones and can be achieved with high probability under the current experiment technology. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Effective scheme for $$W$$ W -state fusion with weak cross-Kerr nonlinearities

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-015-0960-x
Publisher site
See Article on Publisher Site

Abstract

We propose a effective $$W$$ W -state fusion scheme with the help of weak cross-Kerr nonlinearities, which can fuse a $$n$$ n -qubit $$W$$ W state and a $$m$$ m -qubit $$W$$ W state to a $$(m+n-1)$$ ( m + n - 1 ) -qubit state without an ancillary photon. Specially, the present scheme can fuse two Bell states to create a three-qubit $$W$$ W state. We analyze the resource cost and the success probability of the scheme. The analysis shows that the present scheme requires less resource cost compared with the previous ones and can be achieved with high probability under the current experiment technology.

Journal

Quantum Information ProcessingSpringer Journals

Published: Mar 5, 2015

References

  • Phase damping destroys quantum Fisher information of $$W$$ W states
    Ozaydin, F
  • Obtaining a $$W$$ W state from a Greenberger-Horne-Zeilinger state via stochastic local operations and classical communication with a rate approaching unity
    Yu, N; Guo, C; Duan, R
  • Enhancing the $$W$$ W -state quantum-network-fusion process with a single Fredkin gate
    Bugu, S; Yesilyurt, C; Ozaydin, F
  • An optical gate for simultaneous fusion of four photonic $$W$$ W or Bell states
    Yesilyurt, C; Bugu, S; Ozaydin, F
  • Fusing multiple $$W$$ W states simultaneously with a Fredkin gate
    Ozaydin, F; Bugu, S; Yesilyurt, C; Altintas, AA; Tame, M; Özdemir, ŞK

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