Room temperature Organic Exciton-Polariton Condensate in a Lattice

Abstract

Interacting Bosons, loaded in artificial lattices, have emerged as a modern platform to explore collective manybody phenomena, quantum phase transitions and exotic phases of matter as well as to enable advanced on chip simulators. Such experiments strongly rely on well-defined shaping the potential landscape of the Bosons, respectively Bosonic quasi-particles, and have been restricted to cryogenic, or even ultra-cold temperatures. On chip, the GaAs-based exciton-polariton platform emerged as a promising system to implement and study bosonic non-linear systems in lattices, yet demanding cryogenic temperatures. In our work, we discuss the first experiment conducted on a polaritonic lattice at ambient conditions: We utilize fluorescent proteins as an excitonic gain material, providing ultra-stable Frenkel excitons. We directly take advantage of their soft nature by mechanically shaping them in the photonic one-dimensional lattice. We demonstrate controlled loading of the condensate in distinct orbital lattice modes of different symmetries, and finally explore, as an illustrative example, the formation of a gap solitonic mode, driven by the interplay of effective interaction and negative effective mass in our lattice. The observed phenomena in our open dissipative system are comprehensively scrutinized by a nonequilibrium model of polariton condensation. We believe, that this work is establishing the organic polariton platform as a serious contender to the well-established GaAs platform for a wide range of applications relying on coherent Bosons in lattices, given its unprecedented flexibility, cost effectiveness and operation temperature.

19 pages, 4 figures

References in corpus (15)

• Many-Body Physics with Ultracold Gases
• Topological Photonics
• Strong light-matter coupling in two-dimensional atomic crystals
• Lasing in topological edge states of a 1D lattice
• Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons
• Exciton-polariton topological insulator
• Quantum correlations of confined exciton-polaritons
• Spatial and spectral shape of inhomogeneous non-equilibrium exciton-polariton condensates
• Quantum-correlated photons from semiconductor cavity polaritons
• Observation of bosonic condensation in a hybrid monolayer MoSe2-GaAs microcavity
• A platform for electrically pumped polariton simulators and topological lasers
• Controlled ordering of topological charges in an exciton-polariton chain
• Zero-dimensional organic exciton-polaritons in tunable coupled Gaussian defect microcavities at room temperature
• Simple and efficient generation of gap solitons in Bose-Einstein condensates
• Coherence and Interaction in confined room-temperature polariton condensates with Frenkel excitons

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• Machine Learning Framework for Modeling Exciton-Polaritons in Molecular Materials
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• Organic-Inorganic Polaritonics: Linking Frenkel and Wannier-Mott Excitons
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