2014/07/24 by Pasquale Cilibrizzi, Alexis Askitopoulos, Matteo Silva +5 · 44 citations
Engineering · Physics and Astronomy · #Condensation #Gallium arsenide #Optical microcavity #Photon #Photonic Crystals and Applications #Photonic crystal #Photonics #Planar #Polariton #Quantum well #Strong Light-Matter Interactions #Thermal Radiation and Cooling Technologies #cond-mat.mes-hall #cond-mat.mtrl-sci #physics.optics
paper · pdf · doi:10.1063/1.4901814
published in Applied Physics Letters 105(19) (American Institute of Physics) · 3 pages, 3 figures
arxiv created 2014/07/24 · openalex publication_date 2014/11/10 · arxiv updated 2015/03/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.