Stability and spatial coherence of nonresonantly pumped exciton-polariton condensates

  title={Stability and spatial coherence of nonresonantly pumped exciton-polariton condensates},
  author={Nataliya Bobrovska and Elena A. Ostrovskaya and Michał Matuszewski},
  journal={Physical Review B},
We investigate the stability and coherence properties of one-dimensional exciton-polariton condensates under nonresonant pumping. We model the condensate dynamics using the open-dissipative Gross-Pitaevskii equation. In the case of spatially homogeneous pumping, we find that the instability of the steady state leads to significant reduction of the coherence length. We consider two effects that can lead to the stabilization of the steady state, i.e., the polariton energy relaxation and the… 

Figures from this paper

Modulational instability and excitations in circular-symmetry exciton-polariton condensates

We investigate the stability and excitations of two-dimensional circular-symmetry exciton-polariton condensates. The system is described by the circular-symmetry dissipative Gross-Pitaevskii (GP)

Rogue waves in exciton–polariton condensates under homogeneous pumping

We predict the emergence of rogue wave solutions in one-dimensional exciton–polariton condensates under homogeneous pumping. We model the condensate dynamics in a microwire using the dissipative

Unstable and stable regimes of polariton condensation

Modulational instabilities play a key role in a wide range of nonlinear optical phenomena, leading e.g. to the formation of spatial and temporal solitons, rogue waves and chaotic dynamics. Here we

Stability and dynamics of polariton condensates in a deep periodic potential

The behavior of one-dimensional array of exciton-polariton condensates is analyzed. Considering this system as a single extensive condensate localized in a deep periodic potential and using a

Noise-induced transition from superfluid to vortex state in two-dimensional nonequilibrium polariton condensates

We study the Berezinskii-Kosterlitz-Thouless mechanism for vortex-antivortex pair formation in two-dimensional superfluids for nonequilibrium condensates. Our numerical study is based on a classical

Competing role of interactions in synchronisation of exciton–polariton condensates

We present a theoretical study of synchronisation dynamics of incoherently pumped exciton–polariton condensates in coupled polariton traps. Our analysis is based on a coupled-mode theory for the

Breather-type solitons in exciton-polariton microcavities

Abstract.We analytically investigate the formation of the Kuznetsov-Ma breather, the Akhmediev breather and the Peregrine breather in one-dimensional exciton-polariton condensates under homogeneous

Spontaneous formation of spin lattices in semimagnetic exciton-polariton condensates

An exciton-polariton microcavity that incorporates magnetic ions can exhibit a spontaneous self-trapping phenomenon which is an analog of the classical polaron effect. We investigate in detail the

Heat-assisted self-localization of exciton polaritons

Bosonic condensation of microcavity polaritons is accompanied by their relaxation from the ensemble of excited states into a single quantum state. The excess of energy is transferred to the crystal

On a dissipative Gross–Pitaevskii-type model for exciton-polariton condensates

We study a generalized dissipative Gross–Pitaevskii-type model arising in the description of exciton-polariton condensates. We derive global in-time existence results and various a priori estimates



Dynamics and stability of dark solitons in exciton-polariton condensates

We present a comprehensive analytical theory of localized nonlinear excitations—dark solitons—supported by an incoherently pumped, spatially homogeneous exciton-polariton condensate. We show that, in

Dissipative solitons and vortices in polariton Bose-Einstein condensates

We examine spatial localization and dynamical stability of Bose-Einstein condensates of exciton polaritons in microcavities under the condition of off-resonant spatially inhomogeneous optical pumping

Propagation and amplification dynamics of 1D polariton condensates.

A polariton amplifier with a large band width is experimentally demonstrated, opening the way towards the transport of polaritons with high densities over macroscopic distances.

Spatial coherence of a polariton condensate.

An experimental realization of such a minimum uncertainty wave packet of the polariton condensate opens a door to coherent matter-wave phenomena such as Josephson oscillation, superfluidity, and solitons in solid state condensates systems.

Creation and Abrupt Decay of a Quasistationary Dark Soliton in a Polariton Condensate

We predict the existence of a self-localized solution in a nonresonantly pumped exciton-polariton condensate. The solution has a shape resembling the well-known hyperbolic tangent profile of the dark

Superfluidity and critical velocities in nonequilibrium Bose-Einstein condensates.

The drag force on a small moving object and the onset of fringes in the density profile are shown to have a sharp threshold as a function of the velocity; a generalized Landau criterion is developed to explain this behavior in terms of the dispersion of elementary excitations.

Universality in nonequilibrium condensation of exciton-polaritons

We investigate the process of condensation of exciton-polaritons in a one-dimensional nanowire, predicting spontaneous formation of domains of uncondensed excitons and condensed polaritons. We

Excitations in a nonequilibrium Bose-Einstein condensate of exciton polaritons.

A mean-field theory of the dynamics of a nonequilibrium Bose-Einstein condensate of exciton polaritons in a semiconductor microcavity is developed and a diffusive behavior of the Goldstone mode is found in the spatially homogeneous case.

Dynamics of microcavity polaritons in the presence of an electron gas

The dynamics of microcavity polaritons in the presence of an electron gas is experimentally studied through time-resolved photoluminescence under nonresonant excitation. Electrons are shown to

Spatial pattern formation and polarization dynamics of a nonequilibrium spinor polariton condensate

Quasiparticles in semiconductors—such as microcavity polaritons—can form condensates in which the steady-state density profile is set by the balance of pumping and decay. By taking account of the