Exciton-polariton Bose-Einstein condensation with a polymer at room temperature

Stöferle, Thilo; Plumhof, J. D.; Mai, Lijian; Scherf, Ullrich; Mahrt, Rainer F.

doi:10.1117/12.2083831

Cited by 3 publications

(5 citation statements)

References 14 publications

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“…The peak center energy as displayed in Figure b shows the typical blue shift due to the interaction among the polaritons and the exciton reservoir and saturation effects . In the range of excitation powers and polariton energies studied, the behavior is well-described by a linear to sublinear increase in the energetic shift with excitation power (power law with exponent between 0.3 and 1.0) and does not exhibit a pronounced jump when the condensate regime is entered.…”

Section: Resultsmentioning

confidence: 92%

“…This points toward different condensation dynamics in the 0D cavity, where only one discrete lowest state exists and which is essentially free of photonic spatial disorder and potential influence of instabilities of the polariton reservoir. 20 The peak center energy as displayed in Figure 3b shows the typical blue shift due to the interaction among the polaritons and the exciton reservoir 21 and saturation effects. 20 In the range of excitation powers and polariton energies studied, the behavior is well-described by a linear to sublinear increase in the energetic shift with excitation power (power law with exponent between 0.3 and 1.0) and does not exhibit a pronounced jump when the condensate regime is entered.…”

Section: ■ Resultsmentioning

confidence: 99%

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Room-Temperature Exciton-Polariton Condensation in a Tunable Zero-Dimensional Microcavity

et al. 2017

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We create exciton-polaritons in a zero-dimensional (0D) microcavity filled with organic laddertype conjugated polymer in the strong light-matter interaction regime. Photonic confinement at wavelength scale is realized in the longitudinal direction by two dielectric Bragg mirrors and laterally by a sub-micron Gaussian-shaped defect. The cavity is separated into two parts allowing nanometer position control and enabling tuning of exciton and photon fractions of the polariton wavefunction. Polariton condensation is achieved with non-resonant, picosecond optical excitation at ambient conditions and evidenced by a threshold behavior with non-linear increase of the emission intensity, line narrowing and blue-shift of the emission peak. Furthermore, angular emission spectra show that condensation occurs in the ground state of the 0D-cavity, and first order coherence measurements reveal the coherent nature. These experiments open the door for polariton quantum fluids in complex external potentials at room temperature.

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Section: Resultsmentioning

confidence: 92%

Section: ■ Resultsmentioning

confidence: 99%

Room-Temperature Exciton-Polariton Condensation in a Tunable Zero-Dimensional Microcavity

et al. 2017

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“…This points towards different condensation dynamics in the 0D-cavity, where only one discrete lowest state exists, and which is essentially free of photonic spatial disorder and potential influence of instabilities of the polariton reservoir [100]. The peak center energy as displayed in Fig 4.5b shows the typical blueshift which is due to the interaction among the polaritons and the exciton reservoir [67] and saturation effects [100]. In the range of excitation powers and polariton energies studied, the behavior is well-described by a linear to sub-linear increase of energetic shift with excitation power (power-law with exponent between 0.3 − 1.0) and does not exhibit a pronounced jump when the condensate regime is entered.…”

Section: Condensation In a 0d Microcavitymentioning

confidence: 95%

“…To study the condensation dynamics in MeLPPP, the temperature dependence of the condensate as a function of the temperature is investigated in [67]. In this work the authors show that below 150 K the condensation process does not start.…”

Section: Room Temperature Polariton Condensation In Organics: the Melpppmentioning

confidence: 98%

Cavity Exciton-Polariton Condensates in Engineered Potential Landscapes at Room Temperature

Scafirimuto

Urbonas

Stöferle

et al. 2019

2019 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC)

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“…The latter quasi-particles can be created in semiconductor micro-cavities using strong coupling between photons and particle-hole excitations [29]. A non-equilibrium BEC of polaritons has been observed in various experiments in polymers [35,36]. Surprisingly, the transition therein is not always restricted to a mode with the lowest momentum [37].…”

Section: Introductionmentioning

confidence: 99%

Interplay of coherent and dissipative dynamics in condensates of light

et al. 2018

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Based on the Lindblad master equation approach we obtain a detailed microscopic model of photons in a dye-filled cavity, which features condensation of light. To this end we generalise a recent nonequilibrium approach of Kirton and Keeling such that the dye-mediated contribution to the photonphoton interaction in the light condensate is accessible due to an interplay of coherent and dissipative dynamics. We describe the steady-state properties of the system by analysing the resulting equations of motion of both photonic and matter degrees of freedom. In particular, we discuss the existence of two limiting cases for steady states: photon Bose-Einstein condensate and laser-like. In the former case, we determine the corresponding dimensionless photon-photon interaction strength by relying on realistic experimental data and find a good agreement with previous theoretical estimates. Furthermore, we investigate how the dimensionless interaction strength depends on the respective system parameters.

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Exciton-polariton Bose-Einstein condensation with a polymer at room temperature

Cited by 3 publications

References 14 publications

Room-Temperature Exciton-Polariton Condensation in a Tunable Zero-Dimensional Microcavity

Room-Temperature Exciton-Polariton Condensation in a Tunable Zero-Dimensional Microcavity

Cavity Exciton-Polariton Condensates in Engineered Potential Landscapes at Room Temperature

Interplay of coherent and dissipative dynamics in condensates of light

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