Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature

Tao, Renjie; Peng, Kai; Haeberlé, Louis; Li, Quanwei; Jin, Dafei; Fleming, Graham R.; Kéna‐Cohen, Stéphane; Zhang, Xiang; Bao, Wei

doi:10.1038/s41563-022-01276-4

Cited by 47 publications

(31 citation statements)

References 48 publications

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“…Our microcavity samples 40 were made by directly solution-synthesizing the CsPbBr 3 (exciton binding energy ~36 meV 44 ) single crystals inside the prefabricated empty optical cavities, which were formed by a unique wafer-bonding process. Chemical synthesis under nanometer-size confinement enables highly homogenous single-crystalline perovskite microwires and plates with substantial sizes (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…1d). More interestingly, the mode splitting can lead to tunable Rashba-like dispersions [39][40][41] , highly desired for synthetic non-Abelian gauge fields and topological physics studies.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, using large and extremely homogenous solution-grown halide perovskites 40 , we report the observation of polariton superfluidity in a Wannier-Mott exciton system at room temperature under resonantly pulsed excitations. Specifically, we demonstrate transitions from a normal fluid to superfluidity and supersonic fluid in both one- and two-dimensional cases in halide perovskite microcavities.…”

Section: Introductionmentioning

confidence: 99%

“…With the chemical vapor deposition (CVD), small single crystal inorganic halide perovskites have demonstrated polariton condensation at room temperature 34 . Additionally, in contrast to conventional Wannier-Mott excitons materials like GaAs and CdTe, the intrinsic large and tunable splitting between transverse electric and transverse magnetic modes in perovskite cavities 36,37 behaves as a winding in-plane magnetic field on the photon spin, enabling rich physics such as the Rashba-Dresselhaus Hamiltonians [38][39][40][41] , and spin textures 39,42,43 . However, the hallmark frictionless flow of nonlinear superfluidity and Landau criterion demonstration in halide perovskites, the foundation for studying rich spinorbital coupled quantum fluid phenomena, remain elusive.…”

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confidence: 99%

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Room-temperature polariton quantum fluids in halide perovskites

et al. 2022

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Quantum fluids exhibit quantum mechanical effects at the macroscopic level, which contrast strongly with classical fluids. Gain-dissipative solid-state exciton-polaritons systems are promising emulation platforms for complex quantum fluid studies at elevated temperatures. Recently, halide perovskite polariton systems have emerged as materials with distinctive advantages over other room-temperature systems for future studies of topological physics, non-Abelian gauge fields, and spin-orbit interactions. However, the demonstration of nonlinear quantum hydrodynamics, such as superfluidity and Čerenkov flow, which is a consequence of the renormalized elementary excitation spectrum, remains elusive in halide perovskites. Here, using homogenous halide perovskites single crystals, we report, in both one- and two-dimensional cases, the complete set of quantum fluid phase transitions from normal classical fluids to scatterless polariton superfluids and supersonic fluids—all at room temperature, clear consequences of the Landau criterion. Specifically, the supersonic Čerenkov wave pattern was observed at room temperature. The experimental results are also in quantitative agreement with theoretical predictions from the dissipative Gross-Pitaevskii equation. Our results set the stage for exploring the rich non-equilibrium quantum fluid many-body physics at room temperature and also pave the way for important polaritonic device applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Room-temperature polariton quantum fluids in halide perovskites

et al. 2022

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“…Our method can be applied to optically driven lattices of polariton condensates which have today reached hundreds of coherently coupled condensates [9]. Our results could advance the performance of polariton platforms to explore XY spin materials [21,22], topological physics [23,24], vorticity [8,25], and band structure engineering [26,27].…”

Section: Introductionmentioning

confidence: 89%

Enhanced coupling between ballistic exciton-polariton condensates through tailored pumping

2022

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Room‐Temperature Exceptional‐Point‐Driven Polariton Lasing from Perovskite Metasurface

Masharin

Samusev

Bogdanov

et al. 2023

Adv Funct Materials

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Excitons in lead bromide perovskites exhibit high binding energy and high oscillator strength, allowing for a strong light‐matter coupling regime in the perovskite‐based cavities localizing photons at the nanoscale. This opens up the way for the realization of exciton‐polariton Bose–Einstein condensation and polariton lasing at room temperature – the inversion‐free low‐threshold stimulated emission. However, polariton lasing in perovskite planar photon cavities without Bragg mirrors has not yet been observed and proved experimentally. In this study, perovskite metasurface is employed, fabricated with nanoimprint lithography, supporting so‐called exceptional points to demonstrate the room‐temperature polariton lasing. The exceptional points in exciton‐polariton dispersion of the metasurface appear upon optically pumping in the nonlinear regime in the spectral vicinity of a symmetry‐protected bound state in the continuum providing high mode confinement with the enhanced local density of states beneficial for polariton condensation. The observed lasing emission possesses high directivity with a divergence angle of 1° over one axis. The employed nanoimprinting approach for solution‐processable large‐scale polariton lasers is compatible with various planar photonic platforms suitable for on‐chip integration.

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Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature

Cited by 47 publications

References 48 publications

Room-temperature polariton quantum fluids in halide perovskites

Room-temperature polariton quantum fluids in halide perovskites

Enhanced coupling between ballistic exciton-polariton condensates through tailored pumping

Room‐Temperature Exceptional‐Point‐Driven Polariton Lasing from Perovskite Metasurface

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