Fast synthesis of the Fredkin gate via quantum Zeno dynamics

Fast synthesis of the Fredkin gate via quantum Zeno dynamics We propose a scheme for fast synthesizing the Fredkin gate with rf SQUID qubits. This scheme utilizes the quantum Zeno dynamics induced by continuous couplings and the non-identical couplings between SQUIDs and superconducting cavity. The effects of decoherence on the performance for the gate are analyzed in virtue of master equation and non-unitary evolution with full Hamiltonian. The strictly numerical simulation shows that the fidelity of this Fredkin gate is relatively high corresponding to current typical experimental parameters. Furthermore, an equivalent physical model is also constructed in an array of coupled cavities. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Fast synthesis of the Fredkin gate via quantum Zeno dynamics

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Publisher
Springer US
Copyright
Copyright © 2011 by Springer Science+Business Media, LLC
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/s11128-011-0336-9
Publisher site
See Article on Publisher Site

Abstract

We propose a scheme for fast synthesizing the Fredkin gate with rf SQUID qubits. This scheme utilizes the quantum Zeno dynamics induced by continuous couplings and the non-identical couplings between SQUIDs and superconducting cavity. The effects of decoherence on the performance for the gate are analyzed in virtue of master equation and non-unitary evolution with full Hamiltonian. The strictly numerical simulation shows that the fidelity of this Fredkin gate is relatively high corresponding to current typical experimental parameters. Furthermore, an equivalent physical model is also constructed in an array of coupled cavities.

Journal

Quantum Information ProcessingSpringer Journals

Published: Nov 25, 2011

References

  • Quantum phase gate through a dispersive atom-field interaction
    Zou, X.B.; Xiao, Y.F.; Li, S.B.; Yang, Y.; Guo, G.C.
  • One-step implementation of multiqubit conditional phase gating with nitrogen-vacancy centers coupled to a high-Q silica microsphere cavity
    Yang, W.L.; Yin, Z.Q.; Xu, Z.Y.; Feng, M.; Du, J.F.
  • Quantum bits with Josephson junctions
    Wendin, G.; Shumeiko, V.
  • Quantum Zeno effect and dynamics
    Facchi, P.; Ligabò, M.

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