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Type: Artigo de periódico
Title: Kerr nonlinearities and nonclassical states with superconducting qubits and nanomechanical resonators
Author: Semiao, FL
Furuya, K
Milburn, GJ
Abstract: We propose the use of a superconducting charge qubit capacitively coupled to two resonant nanomechanical resonators to generate Yurke-Stoler states, i.e., quantum superpositions of pairs of distinguishable coherent states 180 degrees out of phase with each other. This is achieved by effectively implementing Kerr nonlinearities induced through the application of a strong external driving field in one of the resonators. A simple study of the effect of dissipation on our scheme is also presented and lower bounds of fidelity and purity of the generated state are calculated. Our procedure to implement a Kerr nonlinearity in this system may be used for high-precision measurements in nanomechanical resonators.
Subject: optical Kerr effect
quantum computing
quantum optics
Country: EUA
Editor: Amer Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.79.063811
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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