Superradiance in waveguide-coupled atomic ensembles
- MP Department Seminar
- Date: Jul 21, 2023
- Time: 09:30 AM c.t. - 10:30 AM (Local Time Germany)
- Speaker: Christian Liedl
- Humboldt Universität zu Berlin
- Location: Haber Villa
- Room: Seminar Room
- Host: Department of Molecular Physics
- Contact: valtolina@fhi-berlin.mpg.de

The power of the light emitted by a single, excited
quantum emitter features a characteristic exponential decay. However, the
presence of other, identical emitters can substantially alter the decay
dynamics of the ensemble. Such collectively enhanced emission is termed
superradiance, and has seen increased interest over the last decade due to its
potential applications in quantum technology and metrology.
Typically, one has to place the emitters in close vicinity of each other in order to observe superradiance, which is both technically challenging and limits the number of atoms that contribute. Here, we couple up to 1000 atoms to an optical waveguide to realize superradiance, despite a macroscopic separation between the atoms. Moreover, one can use the optical properties of a waveguided mode to explore new regimes of collective radiation and many-body physics.