Title
Probing the excitation spectrum of polariton condensates Probing the excitation spectrum of polariton condensates
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
79(2010) :12 , 6 p.
ISSN
1098-0121
Article Reference
125311
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Abstract
We propose a four-wave mixing experiment to probe the elementary excitation spectrum of a nonequilibrium Bose-Einstein condensate of exciton-polaritons under nonresonant pumping. Analytical calculations based on mean-field theory show that this method is able to reveal the characteristic negative energy feature of the Bogoliubov dispersion. Numerical simulations including the finite spatial profile of the excitation laser spot and a weak disorder confirm the practical utility of the method for realistic condensates.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/231917/fb6a3632.pdf