Polariton condensation in a strain-compensated planar microcavity with InGaAs quantum wells

Cilibrizzi, Pasquale, Askitopoulos, Alexis, Silva, Matteo, Bastiman, Faebian, Clarke, Edmund, Zajac, Joanna M., Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023 and Lagoudakis, Pavlos G. 2014. Polariton condensation in a strain-compensated planar microcavity with InGaAs quantum wells. Applied Physics Letters 105 (19) , 191118. 10.1063/1.4901814

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Abstract

The investigation of intrinsic interactions in polariton condensates is currently limited by the photonic disorder of semiconductor microcavity structures. Here, we use a strain compensated planar GaAs/AlAs0.98P0.02 microcavity with embedded InGaAs quantum wells having a reduced cross-hatch disorder to overcome this issue. Using real and reciprocal space spectroscopic imaging under non-resonant optical excitation, we observe polariton condensation and a second threshold marking the onset of photon lasing, i.e., the transition from the strong to the weak-coupling regime. Condensation in a structure with suppressed photonic disorder is a necessary step towards the implementation of periodic lattices of interacting condensates, providing a platform for on chip quantum simulations.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	American Institute of Physics
ISSN:	0003-6951
Funders:	EPSRC
Date of First Compliant Deposit:	30 March 2016
Date of Acceptance:	23 October 2014
Last Modified:	05 May 2023 21:55
URI:	https://orca.cardiff.ac.uk/id/eprint/84948

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