TY - JOUR T1 - All-Optical Switch and Transistor Gated by One Stored Photon JF - Science Y1 - 2013 A1 - Wenlan Chen A1 - Kristin M. Beck A1 - Robert Bücker A1 - Michael Gullans A1 - Mikhail D. Lukin A1 - Haruka Tanji-Suzuki A1 - Vladan Vuletic AB - The realization of an all-optical transistor where one 'gate' photon controls a 'source' light beam, is a long-standing goal in optics. By stopping a light pulse in an atomic ensemble contained inside an optical resonator, we realize a device in which one stored gate photon controls the resonator transmission of subsequently applied source photons. A weak gate pulse induces bimodal transmission distribution, corresponding to zero and one gate photons. One stored gate photon produces fivefold source attenuation, and can be retrieved from the atomic ensemble after switching more than one source photon. Without retrieval, one stored gate photon can switch several hundred source photons. With improved storage and retrieval efficiency, our work may enable various new applications, including photonic quantum gates, and deterministic multiphoton entanglement. VL - 341 U4 - 768 - 770 UR - http://arxiv.org/abs/1401.3194v1 CP - 6147 J1 - Science U5 - 10.1126/science.1238169 ER -