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arXiv · 1602.01584

Single-photon-driven high-order sideband transitions in an ultrastrongly coupled circuit quantum electrodynamics system

Zhen Chen·Yimin Wang·Tiefu Li·Lin Tian·Yueyin Qiu·Kunihiro Inomata·Fumiki Yoshihara·Siyuan Han·Franco Nori·J. S. Tsai·J. Q. You
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Abstract

We report the experimental observation of high-order sideband transitions at the single-photon level in a quantum circuit system of a flux qubit ultrastrongly coupled to a coplanar waveguide resonator. With the coupling strength reaching 10% of the resonator's fundamental frequency, we obtain clear signatures of higher-order red and first-order blue-sideband transitions, which are mainly due to the ultrastrong Rabi coupling. Our observation advances the understanding of ultrastrongly-coupled systems and paves the way to study high-order processes in the quantum Rabi model at the single-photon level.

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Zhen Chen, Yimin Wang, Tiefu Li, Lin Tian, Yueyin Qiu, Kunihiro Inomata, Fumiki Yoshihara, Siyuan Han, Franco Nori, J. S. Tsai, J. Q. You. 2017-06-27. Single-photon-driven high-order sideband transitions in an ultrastrongly coupled circuit quantum electrodynamics system. https://doi.org/10.1103/physreva.96.012325

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