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arXiv · 1509.05858

Dressed-state engineering for continuous detection of itinerant microwave photons

Kazuki Koshino·Zhirong Lin·Kunihiro Inomata·Tsuyoshi Yamamoto·Yasunobu Nakamura
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Abstract

We propose a scheme for continuous detection of itinerant microwave photons in circuit quantum electrodynamics. In the proposed device, a superconducting qubit is coupled dispersively to two resonators: one is used to form an impedance-matched $Λ$ system that deterministically captures incoming photons, and the other is used for continuous monitoring of the event. The present scheme enables efficient photon detection: for realistic system parameters, the detection efficiency reaches 0.9 with a bandwidth of about ten megahertz.

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Kazuki Koshino, Zhirong Lin, Kunihiro Inomata, Tsuyoshi Yamamoto, Yasunobu Nakamura. 2015-09-19. Dressed-state engineering for continuous detection of itinerant microwave photons. https://doi.org/10.1103/physreva.93.023824

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