Seeing Quantised Polaritons without Condensation
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Baumberg, JJ
Abstract
Exciton polaritons in high quality semiconductor microcavities can travel long macroscopic distances (>100μm) due to their ultra-light effective mass. The polaritons are repelled from the optically-pumped exciton reservoirs where they are formed, however their spatial dynamics is not as expected for point-like particles. Instead we show polaritons emitted into waveguides travel orthogonally to the repulsive potential gradient, and can only be explained if they are emitted as macroscopic delocalised quantum particles, even before they form Bose condensates.
Description
Keywords
Journal Title
Physical Review Letters
Conference Name
Journal ISSN
1079-7114
Volume Title
Publisher
APS
Publisher DOI
Publisher URL
Sponsorship
Engineering and Physical Sciences Research Council (EP/G060649/1)
Leverhulme Trust (VP1-2013-011)
European Research Council (320503)
Engineering and Physical Sciences Research Council (EP/L027151/1)
Leverhulme Trust (VP1-2013-011)
European Research Council (320503)
Engineering and Physical Sciences Research Council (EP/L027151/1)