Oct 23 – 25, 2019
Aula Gerace
Europe/Rome timezone
We had been hoping to be able to hold the conference on the originally scheduled period in October 2021 but given the pandemic situation we have decided to postpone the conference period to October 2022.

Discrete time crystal in a finite chain of Rydberg atoms without disorder (Q)

Oct 24, 2019, 2:00 PM
20m
Aula Gerace

Aula Gerace

Polo Fibonacci Edificio C Largo B. Pontecorvo, 3 56127 Pisa
talk Quantum Gases Talks on specific topics

Speaker

Davide Rossini (University of Pisa / INFN)

Description

We study the collective dynamics of a clean Floquet system of cold atoms, numerically simulating two distinct realistic set-ups based on a regular chain of interacting Rydberg atoms driven by laser fields. In both cases, the population evolution and its Fourier spectrum display clear signatures of a discrete time crystal (DTC), exhibiting the appearance of a robust subharmonic oscillation which persists on a time scale increasing with the chain size, within a certain range of control parameters. We also characterize how the DTC stability is limited by dissipative processes, which are typically present in the system.

Primary authors

Mr Chu-Hui Fan (School of Physics, Northeast Normal University, Changchun 130024, China) Davide Rossini (University of Pisa / INFN) Mrs Han-Xiao Zhang (School of Physics, Northeast Normal University, Changchun 130024, China) Jin-Hui Wu (School of Physics, Northeast Normal University, Changchun 130024, China) Prof. Maurizio Artoni (Brescia University, 25133 Brescia, Italy) Prof. Giuseppe La Rocca (Scuola Normale Superiore, 56126 Pisa, Italy)

Presentation materials