Approaching unit visibility for control of a superconducting qubit with dispersive readout.
نویسندگان
چکیده
In a Rabi oscillation experiment with a superconducting qubit we show that a visibility in the qubit excited state population of more than 95% can be attained. We perform a dispersive measurement of the qubit state by coupling the qubit non-resonantly to a transmission line resonator and probing the resonator transmission spectrum. The measurement process is well characterized and quantitatively understood. In a measurement of Ramsey fringes, the qubit coherence time is larger than 500 ns.
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عنوان ژورنال:
- Physical review letters
دوره 95 6 شماره
صفحات -
تاریخ انتشار 2005