2008/07/07 by D. Read, Dean Read, P. J. Membry +3 · 1 citation
Chemistry · Engineering · Physics and Astronomy · #Bose–Einstein condensate #Chemistry #Coherence (philosophical gambling strategy) #Condensed matter physics #Degree of polarization #Dephasing #Excitation #Exciton #Physics #Polariton #Polarization (electrochemistry) #Quantum and electron transport phenomena #Quantum mechanics #Scattering #Strong Light-Matter Interactions #Thermal Radiation and Cooling Technologies #cond-mat.mes-hall #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevb.80.195309
4 pages, 3 figures
arxiv created 2008/07/07 · openalex publication_date 2009/11/11 · arxiv updated 2015/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate theoretically the spontaneous formation of a stochastic polarization in exciton-polariton Bose-Einstein condensates in planar microcavities under pulsed excitation. Below the threshold pumping intensity (dependent on the polariton lifetime), the average polarization degree is close to zero, while above threshold the condensate acquires a polarization described by a (pseudospin) vector with random orientation, in general. It is shown that the polariton-polariton interaction leads to suppression of the linear polarization degree of the condensate due to the self-induced Larmor precession of the pseudospin. We establish the link between the second-order coherence of the polariton condensate and the distribution function of its polarization. We examine also the mechanisms of polarization dephasing and relaxation.