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Coherent control of a superconducting qubit with dynamically tunable qubit-cavity coupling

Author(s): Hoffman, AJ; Srinivasan, SJ; Gambetta, JM; Houck, Andrew A

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Abstract: We demonstrate coherent control and measurement of a superconducting qubit coupled to a superconducting coplanar waveguide resonator with a dynamically tunable qubit-cavity coupling strength. Rabi oscillations are measured for several coupling strengths showing that the qubit transition can be turned off by a factor of more than 1500. We show how the qubit can still be accessed in the off state via fast flux pulses. We perform pulse delay measurements with synchronized fast flux pulses on the device and observe T1 and T 2 times of 1.6 and 1.9 μs, respectively. This work demonstrates how this qubit can be incorporated into quantum architectures.
Publication Date: 14-Nov-2011
Electronic Publication Date: 14-Nov-2011
Citation: Hoffman, AJ, Srinivasan, SJ, Gambetta, JM, Houck, AA. (2011). Coherent control of a superconducting qubit with dynamically tunable qubit-cavity coupling. Physical Review B - Condensed Matter and Materials Physics, 84 (10.1103/PhysRevB.84.184515
DOI: doi:10.1103/PhysRevB.84.184515
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review B - Condensed Matter and Materials Physics
Version: Author's manuscript



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