Giant atoms: Maximally-entangled and long-lived states

by Alan Costa Dos Santos (Stockholm University)

Wednesday 1 Feb 2023, 16:15 → 17:45 Europe/Stockholm

Albano 3: 6228 - Mega (22 seats) (Albano Building 3)

Zoom-Link: https://stockholmuniversity.zoom.us/j/64649323433

 

Abstract: In this seminar I will present recent advances in the efficient generation of entanglement between two artificial giant atoms with photon-mediated interactions in a waveguide. First of all, I will present some "strange" properties of a system of N giant atoms and talk about physical realizations of such a system. I will take advantage of properties like adjustable decay processes of giant atoms into the waveguide, and of the interference processes, to show how spontaneous sudden birth of entanglement can be strongly enhanced with giant atoms. Highly entangled states can also be generated in the steady-state regime when the system is driven by a resonant classical field. Also, the statistics of the light emitted by the system can be used as a witness of the presence of entanglement in the system, since giant photon bunching is observed close to the regime of maximal entanglement. As a result, I hope to be able to motivate new developments and discussions on the generation of quantum correlations and manipulation of photon statistics in systems of giant atoms.