Theory of microwave single-photon detection using an impedance-matched system
arXiv:1501.03881 · doi:10.1103/PhysRevA.91.043805
Abstract
By properly driving a qubit-resonator system in the strong dispersive regime, we implement an "impedance-matched" system in the dressed states, where a resonant single photon deterministically induces a Raman transition and excites the qubit. Combining this effect and a fast dispersive readout of the qubit, we realize a detector of itinerant microwave photons. We theoretically analyze the single-photon response of the system and evaluate its performance as a detector. We achieve a high detection efficiency close to unity without relying on precise temporal control of the input pulse shape and under a conservative estimate of the system parameters. The detector can also be reset quickly by applying microwave pulses, which allows a short dead time and a high repetition rate.
arXiv comment11 pages, 9 figures
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