Demonstration of Deterministic Photon-Photon Interactions by Interference-Based Single Photon Nonlinearity (Prof. B. Dayan)
- Date: Nov 18, 2014
- Time: 02:30 PM - 04:00 PM (Local Time Germany)
- Speaker: Professor Dr. Barak Dayan, Weizmann Institute of Science, Israel
- Room: Herbert Walther Lecture Hall
- Host: MPQ
Achieving optical nonlinear interactions at the level of single photons has been the subject of extensive research in the last couple of decades.
I will present the recent demonstration of deterministic, all-optical
photon-photon interactions based on a single atom. This scheme swaps the
quantum states of a single photon and a single quantum emitter (a 87Rb
atom, in our case). Based on passive, interference-based nonlinearity,
this scheme requires no control fields, and can function as a quantum
memory and even a universal quantum gate. It can therefore provide a
building block for scalable quantum networks based on completely passive
photonic devices interconnected and activated solely by single
photons.