Polariton – polariton scattering and the nonequilibrium condensation of exciton polaritons in semiconductor microcavities

2003 ◽  
Vol 173 (9) ◽  
pp. 995
Author(s):  
V.D. Kulakovskii ◽  
D.N. Krizhanovskii ◽  
A.I. Tartakovskii ◽  
Nikolai A. Gippius ◽  
Sergei G. Tikhodeev
Keyword(s):  
Exciton Polaritons ◽  
Semiconductor Microcavities ◽  
Nonequilibrium Condensation

Polariton–polariton scattering and the nonequilibrium condensation of exciton polaritons in semiconductor microcavities

2003 ◽  
Vol 46 (9) ◽  
pp. 967-971 ◽  
Author(s):  
Vladimir D Kulakovskii ◽  
D N Krizhanovskii ◽  
A I Tartakovskii ◽  
Nikolai A Gippius ◽  
Sergei G Tikhodeev
Keyword(s):  
Exciton Polaritons ◽  
Semiconductor Microcavities ◽  
Nonequilibrium Condensation

Role of dark excitations in the nonequilibrium condensation of exciton polaritons in optically-pumped organic single crystal microcavities

2015 ◽  
Vol 29 (22) ◽  
pp. 1550157 ◽  
Author(s):  
Svitlana Zaster ◽  
Eric R. Bittner
Keyword(s):  
Reaction Diffusion ◽  
Optically Pumped ◽  
Reaction Diffusion Model ◽  
Exciton Polaritons ◽  
Organic Single Crystal ◽  
Dielectric Mirrors ◽  
Dynamical Regimes ◽  
Nonequilibrium Condensation ◽  
External Driving

We present a reaction/diffusion model for the formation of a lower polariton condensate in a microcavity containing an organic semiconducting molecular crystalline film. Our model–based upon an anthracene film sandwiched between two reflecting dielectric mirrors–consists of three coupled fields corresponding to a gas of excitons created by an external driving pulse, a reservoir of dark states formed by the nonemissive decay of excitons in to nearby electronic states, and a lower polariton condensate. We show that at finite temperature, the presence of the dark reservoir can augment the exciton population such that a lower critical pumping threshold is required to achieve the critical exciton densities required to sustain a stable condensate population. Using linear-stability analysis, we show that a variety of dynamical regimes can emerge depending upon the characteristics of the cavity and the lattice temperature.

scholarly journals Temperature Dependence of Highly Excited Exciton Polaritons in Semiconductor Microcavities

2013 ◽  
Vol 82 (8) ◽  
pp. 084709 ◽  
Author(s):  
Tomoyuki Horikiri ◽  
Yasuhiro Matsuo ◽  
Yutaka Shikano ◽  
Andreas Löffler ◽  
Sven Höfling ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Exciton Polaritons ◽  
Semiconductor Microcavities

scholarly journals Directional Goldstone waves in polariton condensates close to equilibrium

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Dario Ballarini ◽  
Davide Caputo ◽  
Galbadrakh Dagvadorj ◽  
Richard Juggins ◽  
Milena De Giorgi ◽  
...  
Keyword(s):  
Sound Speed ◽  
Free Particle ◽  
Quantum Fluids ◽  
Collective Excitations ◽  
Goldstone Mode ◽  
Fluid Density ◽  
Exciton Polaritons ◽  
Mode Characteristic ◽  
Semiconductor Microcavities ◽  
Parabolic Dispersion

AbstractQuantum fluids of light are realized in semiconductor microcavities using exciton-polaritons, solid-state quasi-particles with a light mass and sizeable interactions. Here, we use the microscopic analogue of oceanographic techniques to measure the excitation spectrum of a thermalised polariton condensate. Increasing the fluid density, we demonstrate the transition from a free-particle parabolic dispersion to a linear, sound-like Goldstone mode characteristic of superfluids at equilibrium. Notably, we reveal the effect of an asymmetric pumping by showing that collective excitations are created with a definite direction with respect to the condensate. Furthermore, we measure the critical sound speed for polariton superfluids close to equilibrium.

Dark solitons in the condensate of exciton polaritons in semiconductor microcavities under nonresonant optical excitation

JETP Letters ◽  
2014 ◽  
Vol 100 (8) ◽  
pp. 523-529 ◽  
Author(s):  
A. A. Demenev ◽  
S. S. Gavrilov ◽  
A. S. Brichkin ◽  
A. V. Larionov ◽  
V. D. Kulakovskii
Keyword(s):  
Optical Excitation ◽  
Dark Solitons ◽  
Exciton Polaritons ◽  
Semiconductor Microcavities

scholarly journals Spontaneously coherent orbital coupling of counterrotating exciton polaritons in annular perovskite microcavities

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Jun Wang ◽  
Huawen Xu ◽  
Rui Su ◽  
Yutian Peng ◽  
Jinqi Wu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Circular Waveguide ◽  
Real Space ◽  
Macroscopic Quantum ◽  
Spontaneous Formation ◽  
Quantum Phenomenon ◽  
Exciton Polaritons ◽  
Halide Perovskite ◽  
Semiconductor Microcavities ◽  
Phase Ordering

AbstractExciton-polariton condensation is regarded as a spontaneous macroscopic quantum phenomenon with phase ordering and collective coherence. By engineering artificial annular potential landscapes in halide perovskite semiconductor microcavities, we experimentally and theoretically demonstrate the room-temperature spontaneous formation of a coherent superposition of exciton-polariton orbital states with symmetric petal-shaped patterns in real space, resulting from symmetry breaking due to the anisotropic effective potential of the birefringent perovskite crystals. The lobe numbers of such petal-shaped polariton condensates can be precisely controlled by tuning the annular potential geometry. These petal-shaped condensates form in multiple orbital states, carrying locked alternating π phase shifts and vortex–antivortex superposition cores, arising from the coupling of counterrotating exciton-polaritons in the confined circular waveguide. Our geometrically patterned microcavity exhibits promise for realizing room-temperature topological polaritonic devices and optical polaritonic switches based on periodic annular potentials.

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