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

doi:10.1063/1.4901814

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

^*Corresponding author for this work

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

35 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/AlAs_0.98P_0.02 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 language	English
Article number	191118
Journal	Applied Physics Letters
Volume	105
Issue number	19
DOIs	https://doi.org/10.1063/1.4901814
Publication status	Published - 10 Nov 2014

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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.",

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AU - Cilibrizzi, Pasquale

AU - Askitopoulos, Alexis

AU - Silva, Matteo

AU - Bastiman, Faebian

AU - Clarke, Edmund

AU - Zajac, Joanna M

AU - Langbein, Wolfgang

AU - Lagoudakis, Pavlos G.

PY - 2014/11/10

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N2 - 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.

AB - 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.

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

Abstract

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