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

Pasquale Cilibrizzi, Alexis Askitopoulos, Matteo Silva, Faebian Bastiman, Edmund Clarke, Joanna M Zajac, Wolfgang Langbein, Pavlos G. Lagoudakis

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15 Citations (Scopus)

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.

Original languageEnglish
Article number191118
JournalApplied Physics Letters
Volume105
Issue number19
DOIs
Publication statusPublished - 10 Nov 2014

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Cilibrizzi, P., Askitopoulos, A., Silva, M., Bastiman, F., Clarke, E., Zajac, J. M., Langbein, W., & Lagoudakis, P. G. (2014). Polariton condensation in a strain-compensated planar microcavity with InGaAs quantum wells. Applied Physics Letters, 105(19), [191118]. https://doi.org/10.1063/1.4901814