English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We investigated the dynamics of Bose-Einstein condensates (BECs) under anexternal periodic potential. We consider two such systems, the first being madeof exciton-polaritons in a nanoribbon of transition metal dichalcogenides(TMDCs), such as MoSe$_2$, embedded in a microcavity with a special curvature,which serves as the source of the external potential. The second, made of bareexcitons in a nanoribbon of twisted TMDC bilayer, which naturally creates aperiodic Moir\'e potential that can be controlled by the angle of twist. Weproved that such systems exhibit a Time Crystal (TC) phase. This wasdemonstrated by the fact that the calculated BEC spatial density profile showsa non-trivial two-point correlator that oscillates in time. These BECs densityprofiles were calculated by solving the quantum Lindblad master equations forthe density matrix within the mean-field approximation. We then go beyond theusual mean-field approach, by adding a stochastic term to the master equation,which corresponds to quantum corrections, and we show that the TC phase isstill present.

Polaritonic and Excitonic Time Crystals based on TMDC strips in an external periodic potential