Seeing Quantised Polaritons without Condensation
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Authors
Baumberg, JJ
Journal Title
Physical Review Letters
ISSN
1079-7114
Publisher
APS
Type
Article
Metadata
Show full item recordCitation
Baumberg, J. Seeing Quantised Polaritons without Condensation. Physical Review Letters https://doi.org/10.17863/CAM.30307
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.
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)
Identifiers
This record's DOI: https://doi.org/10.17863/CAM.30307
This record's URL: https://www.repository.cam.ac.uk/handle/1810/282944
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Licence:
http://www.rioxx.net/licenses/all-rights-reserved
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