Ultralong temporal coherence in optically trapped exciton-polariton condensates
Abstract
We investigate an optically trapped exciton-polariton condensate and observe temporal coherence beyond 1 ns in duration. Due to the reduction of the spatial overlap with the thermal reservoir of excitons, the coherence time of the trapped condensate is more than an order of magnitude longer than that of an untrapped condensate. This ultralong coherence enables high-precision spectroscopy of the trapped condensate, and we observe periodic beats of the field correlation function due to a fine energy splitting of two polarization modes of the condensate. Our results are important for realizing polariton simulators with spinor condensates in lattice potentials.
Citation
Orfanakis , K , Tzortzakakis , A , Petrosyan , D , Savvidis , P & Ohadi , H 2021 , ' Ultralong temporal coherence in optically trapped exciton-polariton condensates ' , Physical Review. B, Condensed matter and materials physics , vol. 103 , no. 23 , 235313 . https://doi.org/10.1103/PhysRevB.103.235313
Publication
Physical Review. B, Condensed matter and materials physics
Status
Peer reviewed
ISSN
1098-0121Type
Journal article
Description
Funding: This work was supported by Grant No. EPSRC EP/S014403/1. K.O. acknowledges EPSRC for PhD studentship support through grant no. EP/L015110/1. P.S. acknowledges support by Westlake University (Project No. 041020100118), Program 2018R01002 supported by Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang, and bilateral Greece-Russia Polisimulator project co-financed by Greece and the EU Regional Development Fund.Collections
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