Using weak nonlinearity under decoherence for macroscopic entanglement generation and quantum computation

Hyunseok Jeong
Phys. Rev. A 72, 034305 – Published 15 September 2005

Abstract

Recently, there have been several suggestions that weak Kerr nonlinearity can be used for generation of macroscopic superpositions and entanglement and for linear optics quantum computation. However, it is not immediately clear that this approach can overcome decoherence effects. Our numerical study shows that nonlinearity of weak strength could be useful for macroscopic entanglement generation and quantum gate operations in the presence of decoherence. We suggest specific values for real experiments based on our analysis. Our discussion shows that the generation of macroscopic entanglement using this approach is within the reach of current technology.

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  • Received 18 May 2005

DOI:https://doi.org/10.1103/PhysRevA.72.034305

©2005 American Physical Society

Authors & Affiliations

Hyunseok Jeong

  • Centre for Quantum Computer Technology, Department of Physics, University of Queensland, St Lucia, Qld 4072, Australia

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Issue

Vol. 72, Iss. 3 — September 2005

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