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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this letter, we give an analytical quantum description of anon-equilibrium polariton Bose-Einstein condensate (BEC) based on the solutionof the master equation for the full polariton density matrix in the limit offast thermalization. We find the density matrix of a non-equilibrium BEC, thattakes into account quantum correlations between all polariton states. We showthat the formation of BEC is accompanied by the build-up of cross-correlationsbetween the ground state and the excited states reaching their highest valuesat the condensation threshold. Despite the non-equilibrium nature of polaritonsystems, we show the average population of polariton states exhibits theBose-Einstein distribution with an almost zero effective chemical potentialabove the condensation threshold similar to an equilibrium BEC. We demonstratethat above threshold the effective temperature of polariton condensate dropsbelow the reservoir temperature.

Exact analytical solution for density matrix of a non-equilibrium polariton Bose-Einstein condensate