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Título : Time-resolved qubit readout via nonlinear Josephson inductance
Autor : Reuther, Georg M., Zueco, David, Hänggi, Peter, Kohler, Sigmund
Fecha de publicación : Sep-2011
Editor: Institute of Physics Publishing
Resumen: We propose a generalization of dispersive qubit readout that provides the time evolution of a flux qubit observable. Our proposal relies on the nonlinear coupling of the qubit to a harmonic oscillator with high frequency, representing a dc superconducting quantum interference device. Information about the qubit dynamics is obtained by recording the oscillator response to resonant driving and subsequent lock-in detection. The measurement process is simulated for the example of coherent qubit oscillations. This corroborates the underlying measurement relation and also reveals that the measurement scheme possesses low backaction and high fidelity.
Descripción : 19 páginas, 3 figuras.
Versión del editor:
ISSN: 1367-2630
DOI: 10.1088/1367-2630/13/9/093022
Citación : New Journal of Physics 13: 093022 (2011)
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