DLS Lecture: Contactless photon-photon interactions

20.04.2017, 15:00

Prof. Charles Adams, University of Durham


Place: Max Planck Institute for the Science of Light, Seminar Room A1.500, Staudtstr. 2, Erlangen

In 2007, it was written that 'no known or foreseen material has an optical nonlinearity strong enough to implement' a large single-photon phase shift [1], and also we started to study a new ‘material’ where photons couple to highly-excited Rydberg excitations that do exhibit strong interactions [2]. Ten years on, this new material based on ultra-cold Rydberg atoms has been used to demonstrate strong photon-photon interactions, large single-photon phase shifts, and single-photon transistors (see recent review [3]).

In this talk, I will review the physics of Rydberg quantum optics and discuss our most recent results including a ‘contactless' photon-photon interaction [4].



[1] J. L. O’Brien, Science 318, 1567 (2007). 
[2] A. Mohapatra, T. R. Jackson and C. S. Adams, Phys. Rev. Lett. 98, 113003 (2007). 
[3] O. Firstenberg, C. S. Adams, and S. Hofferberth, Nonlinear quantum optics mediated by Rydberg interactions, J. Phys. B 49, 152003 (2016). 
[4] H. Busche et. al. Nature Phys. (to appear).