Condensation of Semiconductor Microcavity Exciton Polaritons

A phase transition from a classical thermal mixed state to a quantum-mechanical pure state of exciton polaritons is observed in a GaAs multiple quantum-well microcavity from the decrease of the second-order coherence function. Supporting evidence is obtained from the observation of a nonlinear thres...

Full description

Saved in:
Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2002-10, Vol.298 (5591), p.199-202
Main Authors: Deng, Hui, Weihs, Gregor, Santori, Charles, Bloch, Jacqueline, Yamamoto, Yoshihisa
Format: Article
Language:English
Subjects:
Average linear density
Classical and quantum physics: mechanics and fields
Condensation
Evidence
Exact sciences and technology
Excitons
Lasers
Matter waves
Optics
Phonons
Photons
Physics
Polaritons
Pulse duration
Pumps
Quantum optics
Quantum theory
Semiconductors
Semiconductors (Materials)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A phase transition from a classical thermal mixed state to a quantum-mechanical pure state of exciton polaritons is observed in a GaAs multiple quantum-well microcavity from the decrease of the second-order coherence function. Supporting evidence is obtained from the observation of a nonlinear threshold behavior in the pump-intensity dependence of the emission, a polariton-like dispersion relation above threshold, and a decrease of the relaxation time into the lower polariton state. The condensation of microcavity exciton polaritons is confirmed.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1074464