arXiv subjects

T. A. Khudaiberganov

Publications and source records attributed to T. A. Khudaiberganov.

4 recordsLinked to original sources

arXiv2024

Non-classical effects in polariton trion

We investigate quantum phenomena in a system of three coupled microcavities. The possibility of observing polariton blockade in a dimer and triple micropillar configuration is discussed. The discovered quantum effects allow using these systems as versatile sources of individual polariton photons. Various manifestations of the quantum blockade can be tuned with the use of the pumping laser frequency. We discovered that the action of an artificial gauge field on a polariton trion causes the effect of a collective quantum blockade -- a phenomenon consisting in blocking of excitation of the state with $n$ particles distributed over multiple coupled modes. We found that when a collective quantum blockade on a non-Hermitain polariton dimer as part of the trion and a blockade on the machine itself with an antibunching effect of a micropillar coupled to the dimer, then a polariton dimer is entangled with that micropillar.

cond-mat.mes-hall↗

arXiv2023

The antibunching effect of polaritons in a microcavity dimer

We are consistency considered two cases. Firstly, we consider exciton-photon statistic radiation from pillar microcavity. We obtained a photon antibunching and small polariton antibunching. Secondly, we use two strong-coupled pillar microcavities to achieve pronounced polariton antibunching. We observed the polariton blockade effect when use a polarion dimer.

cond-mat.mes-hall↗

arXiv2021

Quantum statistics of light emitted from a pillar microcavity

A quantum behavior of the light emitted by exciton polaritons excited in a pillar semiconductor microcavity with embedded quantum well is investigated. Considering the bare excitons and photon modes as coupled quantum oscillators allows for an accurate accounting of the nonlinear and dissipative effects. In particular, using the method of quantum states presentation in a quantum phase space via quasiprobability functions (namely, a $P$-function and a Wigner function), we study the effect of the laser and the exciton-photon detuning on the second order correlation function of the emitted photons. We determine the conditions for the phenomena of bunching, giant bunching, and antibunching of the emitted light. In particular, we predict the effect of a giant bunching for the case of a large exciton to photon population ratio. Within the domain of parameters supporting a bistability regime we demonstrate the effect of bunching of photons.

cond-mat.mes-hall↗

arXiv2018

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 lattice that eventually involves heating of the structure. Creation of the condensate results in the local increase of the temperature which leads to the red shift of the exciton energy providing the mechanism for polariton self-trapping. By employing the driven-dissipative Gross-Pitaevskii model we predict a new type of a stable localized solution supported by the thermally-induced self-trapping in a one-dimensional microcavity structure. The predicted solution is of a sink-type i.e. it is characterized by the presence of converging density currents. We examine the spontaneous formation of these states from the white noise under spatially localized pumping and analyze the criteria for their stability. The collective bosonic polaron state described here may be considered as a toy model for studies of bosonic stars formed due to the self-gravity effect.

cond-mat.mes-hall↗