title: Implementation of an impedance-matched Λ system by dressed-state engineering.
abstract: In one-dimensional optical setups, light-matter interaction is drastically enhanced by the interference between the incident and scattered fields. Particularly, in the impedance-matched Λ-type three-level systems, a single photon deterministically induces the Raman transition and switches the electronic state of the system. Here, we show that such a Λ system can be implemented by using dressed states of a driven superconducting qubit and a resonator. The input microwave photons are perfectly absorbed and are down-converted into other frequency modes in the same waveguide. The proposed setup is applicable to the detection of single microwave photons and the swapping of the photon and matter qubits.
authors.affiliation: College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa, Chiba 272-0827, Japan.
authors.forename: Kazuki
authors.initials: K
authors.lastname: Koshino
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Inomata
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Yasunobu
authors.initials: Y
authors.lastname: Nakamura