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.
- Received 5 October 2011
DOI:https://doi.org/10.1103/PhysRevLett.108.103902
© 2012 American Physical Society