Kerr nonlinearities and nonclassical states with superconducting qubits and nanomechanical resonators

Semiao, F. L., Furuya, K. and Milburn, G. J. (2009) Kerr nonlinearities and nonclassical states with superconducting qubits and nanomechanical resonators. Physical Review A (Atomic, Molecular and Optical Physics), 79 6: 063811-1-063811-5. doi:10.1103/PhysRevA.79.063811

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Author Semiao, F. L.
Furuya, K.
Milburn, G. J.
Title Kerr nonlinearities and nonclassical states with superconducting qubits and nanomechanical resonators
Journal name Physical Review A (Atomic, Molecular and Optical Physics)   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2009-06-08
Sub-type Article (original research)
DOI 10.1103/PhysRevA.79.063811
Open Access Status File (Publisher version)
Volume 79
Issue 6
Start page 063811-1
End page 063811-5
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2010
Language eng
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° 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.
Keyword Optical Kerr effect
Quantum-nondemolition Measurements
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article #063811

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2010 Higher Education Research Data Collection
ERA 2012 Admin Only
 
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Citation counts: TR Web of Science Citation Count  Cited 26 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 03 Sep 2009, 07:49:52 EST by Mr Andrew Martlew on behalf of Physics