JQI-QuICS-CMTC Seminar

Date
Fri, Oct 20, 2017 4:15 pm - 5:15 pm
Location
PSC 2136

Description

Speaker: Jeremy Young

Affiliation: JQI

Title: Dissipation induced dipole blockade and anti-blockade in driven Rydberg systems

Abstract: We study the competing blockade and anti-blockade effects induced by spontaneously generated contaminant Rydberg atoms in driven Rydberg systems. These contaminant atoms provide a source of strong dipole-dipole interactions and play a crucial role in the system's behavior. We study this problem theoretically using two different approaches. The first is a cumulant expansion approximation, in which we ignore third-order and higher connected correlations. Using this approach for the case of resonant drive, a many-body blockade radius picture arises, and we find qualitative agreement with experiment. The second theoretical approach is a set of phenomenological inhomogeneous rate equations. We compare the results of our rate equation model to the experimental observations in [E. A. Goldschmidt, et al., PRL 116, 113001 (2016)] and find that these rate equations provide quantitatively good scaling behavior of the steady-state Rydberg population for both resonant and off-resonant drive.

*Snacks and drinks will be served at 4 pm*