Hydrodynamic superradiance in wave-mediated cooperative tunneling

Superradiance occurs in quantum optics when the emission rate of photons from multiple atoms is enhanced by inter-atom interactions. When the distance between two atoms is comparable to the emission wavelength, the atoms become entangled and their emission rate varies sinusoidally with their separation distance due to quantum interference. We here explore a theoretical model of pilot-wave hydrodynamics, wherein droplets self-propel on the surface of a vibrating bath. When a droplet is confined to a pair of hydrodynamic cavities between which it may transition unpredictably, in certain instances the system constitutes a two-level system with well-defined ground and excited states. When two such two-level systems are coupled through an intervening cavity, the probability of transition between states may be enhanced or diminished owing to the wave-mediated influence of its neighbour. Moreover, the tunneling probability varies sinusoidally with the coupling-cavity length. We thus establish a classical analog of quantum superradiance.

COMMUNICATIONS PHYSICS
Volume: 5 Issue: 1
Article Number: 142
Published: JUN 2022

By: Papatryfonos, Konstantinos; Ruelle, Melanie; Bourdiol, Corentin; Nachbin, Andre; Bush, John W. M.; Labousse, Matthieu

[DOI10.1038/s42005-022-00918-y https://rdcu.be/cQV2a]
[Hal open science https://hal.archives-ouvertes.fr/ha...]


Top



See also...

Spontaneous self-constraint in active nematic flows

Active processes drive biological dynamics across various scales and include subcellular cytoskeletal remodelling, tissue development in (…) 

> More...

Reconfiguration, Interrupted Aging and Enhanced Dynamics of a Colloidal Gel using Photo-Switchable Active Doping

We study light-activated quasi-2d gels made of a colloidal network doped with Janus particles. Following the gel formation, the internal dynamics (…) 

> More...