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.
Highlights
Exciton–polaritons are light–matter excitations arising from the strong-coupling of photons and excitons in semiconductor microcavities [1]
We studied the influence of pump power on the stability of spin-bifurcated trapped polariton condensates
We observed a variation of the spin-flip rate by more than four orders of magnitude and an extreme nonmonotonous dependence on pump power
Summary
Yago del Valle-Inclan Redondo, Hamid Ohadi, Yuri G Rubo, Orr Beer, Andrew J Ramsay, Original content from this Symeon I Tsintzos, Zacharias Hatzopoulos, Pavlos G Savvidis and Jeremy J Baumberg work may be used under 1 NanoPhotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom the terms of the Creative 2 SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom. Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Temixco, Morelos 62580, Mexico. Hitachi Cambridge Laboratory, Hitachi Europe Ltd, Cambridge CB3 0HE, United Kingdom attribution to the. Due to an error in the production process, Γ was changed to Gcy in equation (1). The correct equation should read: dn+ dt
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
