Theoretical comparison of quantum Zeno gates and logic gates based on the cross-Kerr nonlinearity

Hao You, J. D. Franson

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Quantum logic operations can be implemented using nonlinear phase shifts (the Kerr effect) or the quantum Zeno effect based on strong two-photon absorption. Both approaches utilize three-level atoms, where the upper level is tuned on resonance for the Zeno gates and off-resonance for the nonlinear phase gates. The performance of nonlinear phase gates and Zeno gates are compared under conditions where the parameters of the resonant cavities and three-level atoms are the same in both cases. It is found that the expected performance is comparable for the two approaches despite the fundamental differences between the Zeno and Kerr effects.

Original languageEnglish (US)
Pages (from-to)1627-1651
Number of pages25
JournalQuantum Information Processing
Volume11
Issue number6
DOIs
StatePublished - Dec 1 2012

Keywords

  • Quantum computing
  • Quantum logic gates
  • Zeno effect
  • Zeno gates

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Statistical and Nonlinear Physics
  • Theoretical Computer Science
  • Signal Processing
  • Modeling and Simulation
  • Electrical and Electronic Engineering

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