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

Del Valle-Inclan Redondo, Yago; Ohadi, Hamid; Rubo, YG; Beer, O; Ramsay, AJ; Tsintzos, SI; Hatzopoulos, Z; Savvidis, PG; Baumberg, Jeremy John

View / Open Files

Published version (PDF, 1Mb)

Authors

Del Valle-Inclan Redondo, Yago

Ohadi, Hamid

Rubo, YG

Beer, O

Ramsay, AJ

Tsintzos, SI

Hatzopoulos, Z

Publication Date

2018-07-01

Journal Title

New Journal of Physics

ISSN

1367-2630

Publisher

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft

Volume

Issue

Type

Article

Later Version(s)

https://www.repository.cam.ac.uk/handle/1810/280665

Metadata

Show full item record

Citation

Del Valle-Inclan Redondo, Y., Ohadi, H., Rubo, Y., Beer, O., Ramsay, A., Tsintzos, S., Hatzopoulos, Z., et al. (2018). Stochastic spin flips in polariton condensates: Nonlinear tuning from GHz to sub-Hz. New Journal of Physics, 20 (7) https://doi.org/10.1088/1367-2630/aad377

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 spinpolarised states with >10⁴ slow-down of the flip rate by tuning the optical pump power. Individual spin flips faster than 50 picosecond 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.

Sponsorship

ERC LINASS 320503. Leverhulme Trust Grant No. VP1-2013-011. Bilateral Greece-Russia “Polisimulator” project co-financed by Greece and the EU Regional Development Fund. Stavros Niarchos Foundation, “ARCHERS” project. Horizon 2020 programme (No. FETPROACT-2016 732894-HOT). CONACYT (Mexico) grant No. 251808. Institute for Basic Science in Korea (IBS-R024-D1)

Funder references

European Research Council (320503)

Engineering and Physical Sciences Research Council (EP/L027151/1)

Identifiers

External DOI: https://doi.org/10.1088/1367-2630/aad377

This record's URL: https://www.repository.cam.ac.uk/handle/1810/279843

Rights

Attribution 4.0 International (CC BY 4.0)

Licence URL: https://creativecommons.org/licenses/by/4.0/

Statistics

Total file downloads (since January 2020). For more information on metrics see the IRUS guide.

Except where otherwise noted, this item's licence is described as Attribution 4.0 International (CC BY 4.0)