Generations of N-atom GHZ state and $$2^n$$ 2 n -atom W state assisted by quantum dots in optical microcavities

Generations of N-atom GHZ state and $$2^n$$ 2 n -atom W state assisted by quantum dots in... Multipartite entangled state plays a crucial role in quantum applications. We propose theoretical schemes to generate entanglements among several trapped atoms with the help of quantum dots in single-side optical microcavities. In the first scheme, a basic architecture will be built to produce arbitrary N-atom GHZ state by using only one auxiliary photon. Moreover, using a photon state with multiple modes, we can realize $$2^n$$ 2 n -atom W state. All these schemes are insensitive to the variation of the atom–photon coupling rates and are also right for remotely trapped atoms by using the photonic transmissions, local quantum operations, and classical channel. Simulations show that our schemes are faithful and available with present physical techniques. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Generations of N-atom GHZ state and $$2^n$$ 2 n -atom W state assisted by quantum dots in optical microcavities

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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/s11128-015-1087-9
Publisher site
See Article on Publisher Site

Abstract

Multipartite entangled state plays a crucial role in quantum applications. We propose theoretical schemes to generate entanglements among several trapped atoms with the help of quantum dots in single-side optical microcavities. In the first scheme, a basic architecture will be built to produce arbitrary N-atom GHZ state by using only one auxiliary photon. Moreover, using a photon state with multiple modes, we can realize $$2^n$$ 2 n -atom W state. All these schemes are insensitive to the variation of the atom–photon coupling rates and are also right for remotely trapped atoms by using the photonic transmissions, local quantum operations, and classical channel. Simulations show that our schemes are faithful and available with present physical techniques.

Journal

Quantum Information ProcessingSpringer Journals

Published: Aug 4, 2015

References

  • Multi-party quantum secret sharing with the single-particle quantum state to encode the information
    Chen, X-B; Niu, X-X; Zhou, X-J; Yang, Y-X
  • A solid-state light-matter interface at the single-photon level
    Riedmatten, HD; Afzelius, M; Staudt, MU; Simon, C
  • An elementary quantum network of single atoms in optical cavities
    Ritter, S; Neleke, C; Hahn, C; Reiserer, A; Neuzner, A; Uphoff, M; Méke, M; Figueroa, E; Bochmann, J; Rempe, G
  • Efficient routing of single photons by one atom and a microtoroidal cavity
    Aoki, T; Parkins, AS; Alton, DJ; Regal, CA; Dayan, B; Ostby, E; Vahala, KJ; Kimble, HJ

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