Light-induced coherence in an atom-cavity system
Seminar:
QUEST Center event:
Speaker:
Andreas Hemmerich (Hamburg)
Date :
30/07/2018 - 15:00
Place:
Resnick (#209) - room 210
Abstract:
We demonstrate light-induced formation of coherence in a cold atomic gas system that utilizes the suppression of a competing density wave (DW) order. The condensed atoms are placed in an optical cavity and pumped by an external optical standing wave, which induces a long-range interaction, mediated by photon scattering, and DW order above a critical pump strength. We show that light induced modulation of the pump wave can suppress this DW order and restore coherence. This establishes a foundational principle of dynamical control of competing orders analogous to a hypothesized mechanism for light induced superconductivity in high-Tc cuprates.
- Last modified: 26/07/2018