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Approaching perfect microwave photodetection in circuit QED

B. Peropadre, G. Romero, G. Johansson, C. M. Wilson, E. Solano, J. J. García-Ripoll
2011 Physical Review A. Atomic, Molecular, and Optical Physics  

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2010 pre-print
arXiv:1101.0016v1 fatcat:i4cbyt2fwzdzpkqwkn4ehs7piq
In this work we propose a microwave photon detector which successfully reaches 100% efficiency with only one absorber. Our design consists of a metastable quantum circuit coupled to a semi-infinite transmission line which performs highly efficient photodetection in a simplified manner as compared to previous proposals. We extensively study the scattering properties of realistic wavepackets against this device, thereby computing the efficiency of the detector. We find that the detector has many
more » ... perating modes, can detect detuned photons, is robust against design imperfections and can be made broadband by using more than one absorbing element in the design.
doi:10.1103/physreva.84.063834 fatcat:jzizvewvdvgrtpdmg4pg7r5rr4
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B. Peropadre, G. Romero, G. Johansson, C. M. Wilson, E. Solano, J. J. García-Ripoll. "Approaching perfect microwave photodetection in circuit QED." Physical Review A. Atomic, Molecular, and Optical Physics 84.6 (2011)