Continuous monitoring of Rabi oscillations in a Josephson flux qubit |
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| Authors: | Il'ichev E Oukhanski N Izmalkov A Wagner Th Grajcar M Meyer H-G Smirnov A Yu Maassen van den Brink Alec Amin M H S Zagoskin A M |
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| Institution: | Institute for Physical High Technology, P.O. Box 100239, D-07702 Jena, Germany. |
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| Abstract: | Under resonant irradiation, a quantum system can undergo coherent (Rabi) oscillations in time. We report evidence for such oscillations in a continuously observed three-Josephson-junction flux qubit, coupled to a high-quality tank circuit tuned to the Rabi frequency. In addition to simplicity, this method of Rabi spectroscopy enabled a long coherence time of about 2.5 micros, corresponding to an effective qubit quality factor approximately 7000. |
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