Demonstration of Deterministic Photon-Atom and Photon-Photon Interactions based on Single-Photon Raman Interaction (SPRINT)
Abstract: Please note the special time for this seminar - 12 noon, lunch will be served following the talk.
I will present our demonstration of a control-fields-free, deterministic interface between a single photon and a single atom [1,2]. Relying on Single Photon Raman Interaction (SPRINT) [2-4], this completely-passive scheme swaps a flying qubit (encoded in the two possible input modes of a photon), with a stationary qubit (encoded in the two ground states of the atom), and can be also harnessed to perform universal quantum gates.
Using SPRINT we experimentally demonstrated all-optical switching of single photons by single photons , and deterministic extraction of a single photon from an optical pulse . Applicable to any atom-like Lambda system, SPRINT provides a versatile building block for scalable quantum networks based on completely passive nodes interconnected and activated solely by single photons.
 I. Shomroni, S. Rosenblum, Y. Lovsky, O. Bechler, G. Guendelman & B. Dayan, Science 345, 903 (2014)
 S. Rosenblum, O. Bechler, Y. Lovski, I. Shomroni, G. Guendelman, & B. Dayan, Nature Photonics 10, 19 (2016)
 S. Rosenblum, A.S. Parkins & B. Dayan, Phys. Rev. A 84, 033854 (2011)
 S. Rosenblum, A. Borne & B. Dayan, arXiv: quant-ph 1412.0604 (2014)