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Proposal for genera...
Proposal for generating and detecting multi-qubit GHZ states in circuit QED
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- Bishop, Lev S. (author)
- Yale University
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- Tornberg, Lars, 1979 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Price, D. (author)
- Yale University
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- Ginossar, E. (author)
- Yale University
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- Nunnenkamp, A. (author)
- Yale University
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- Houck, A. A. (author)
- Princeton University
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- Gambetta, J.M. (author)
- University of Waterloo
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- Koch, Jens (author)
- Yale University
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- Johansson, Göran, 1971 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Girvin, S.M. (author)
- Yale University
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- Schoelkopf, RJ (author)
- Yale University
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(creator_code:org_t)
- 2009-07-23
- 2009
- English.
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In: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 11, s. 073040-
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Abstract
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- We propose methods for the preparation and entanglement detectionof multi-qubit Greenberger–Horne–Zeilinger (GHZ) states in circuit quantumelectrodynamics. Using quantum trajectory simulations appropriate for thesituation of a weak continuous measurement, we show that the joint dispersivereadout of several qubits can be utilized for the probabilistic production ofhigh-fidelity GHZ states. When employing a nonlinear filter on the recordedhomodyne signal, the selected states are found to exhibit values of theBell–Mermin operator exceeding 2 under realistic conditions. We discuss thepotential of the dispersive readout to demonstrate a violation of the Merminbound, and present a measurement scheme avoiding the necessity for fulldetector tomography.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Bishop, Lev S.
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Tornberg, Lars, ...
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Price, D.
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Ginossar, E.
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Nunnenkamp, A.
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Houck, A. A.
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show more...
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Gambetta, J.M.
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Koch, Jens
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Johansson, Göran ...
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Girvin, S.M.
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Schoelkopf, RJ
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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New Journal of P ...
- By the university
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Chalmers University of Technology