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복잡계 이론물리 연구단
복잡계 이론물리 연구단
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Stochastic spin flips in polariton condensates: Nonlinear tuning from GHz to sub-Hz

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Title
Stochastic spin flips in polariton condensates: Nonlinear tuning from GHz to sub-Hz
Author(s)
Del Valle-Inclan Redondo Y.; Ohadi H.; Yuri G Rubo; Beer O.; Ramsay A.J.; Tsintzos S.I.; Hatzopoulos Z.; Savvidis P.G.; Baumberg J.J.
Publication Date
2018-07
Journal
NEW JOURNAL OF PHYSICS, v.20, no.7, pp.075008 -
Publisher
IOP PUBLISHING LTD
Abstract
The stability of spin of macroscopic quantum states to intrinsic noise is studied for non-resonantly-pumped optically-trapped polariton condensates. We demonstrate flipping between the two spin-polarised states with >104 slow-down of the flip rate by tuning the optical pump power. Individual spin flips faster than 50 ps are time resolved using single-shot streak camera imaging. We reproduce our results within a mean-field model accounting for cross-spin scattering between excitons and polaritons, yielding a ratio of cross- to co-spin scattering of ∼0.6, in contrast with previous literature suggestions. © 2018 The Author(s). Published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft
URI
https://pr.ibs.re.kr/handle/8788114/4947
ISSN
1367-2630
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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