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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 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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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: 21 Feb 2019 11:57

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