title: Efficient single-photon frequency conversion using a Sagnac interferometer.
abstract: We propose a scheme for efficient optical frequency conversion at the single-photon power level. The scheme exploits the quantum interference of single-photon states at a three-level quantum emitter coupled to a Sagnac interferometer. We show that this device can achieve single-photon frequency up- or down-conversion with near unity efficiency.
authors.affiliation: Department of Electrical and Systems Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
authors.forename: Matthew
authors.initials: M
authors.lastname: Bradford
authors.forename: Kenechukwu C
authors.initials: KC
authors.lastname: Obi
authors.forename: Jung-Tsung
authors.initials: JT
authors.lastname: Shen