One-dimensional ZnO exciton polaritons with negligible thermal broadening at room temperature
| Autor: | Nikolay A. Gippius, Aurelien A. P. Trichet, Goran Pavlovic, Wei Xie, Guillaume Malpuech, Maxime Richard, Liaoxin Sun, Le Si Dang, Zhanghai Chen |
|---|---|
| Přispěvatelé: | Nanophysique et Semiconducteurs (NPSC), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Fudan University, Fudan University [Shanghai], Laboratoire des sciences et matériaux pour l'électronique et d'automatique (LASMEA), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Centre National de la Recherche Scientifique (CNRS), Institut Pascal (IP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS), European Project: 258608,EC:FP7:ERC,ERC-2010-StG_20091028,HANDY-Q(2010), Nanophysique et Semiconducteurs (NEEL - NPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Photoluminescence Exciton Dephasing FOS: Physical sciences Physics::Optics 02 engineering and technology Exciton-polaritons 01 natural sciences 7. Clean energy Condensed Matter::Materials Science [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Polariton Figure of merit 010306 general physics Condensed Matter::Quantum Gases Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Condensed Matter::Other 021001 nanoscience & nanotechnology Condensed Matter Physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 3. Good health Electronic Optical and Magnetic Materials Condensed Matter - Other Condensed Matter Full width at half maximum [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] Whispering-gallery wave 0210 nano-technology Other Condensed Matter (cond-mat.other) |
| Zdroj: | Physical Review B: Condensed Matter and Materials Physics (1998-2015) Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2011, 83 (4), pp.041302(R). ⟨10.1103/PhysRevB.83.041302⟩ Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83 (4), pp.041302(R). ⟨10.1103/PhysRevB.83.041302⟩ |
| ISSN: | 1098-0121 1550-235X |
| DOI: | 10.1103/PhysRevB.83.041302⟩ |
| Popis: | Phonon damping is the main source of pure dephasing in the solid state, limiting many fundamental quantum effects to low temperature observations. Here we show how excitons in semiconductors can be totally decoupled from the phonon bath, even at room temperature, thanks to their strong interaction with photons. To do so, we investigated ZnO microwires, a new semiconductor nanostructure made of large band-gap material where the light can be trapped and guided into whispering gallery modes. In this system, the very large coupling regime between exciton and photon results in unusual exciton-polariton of one-dimensional character and Rabi splitting as large as 300meV. We find that polariton modes of excitonic fraction up to 75% exhibit no thermal broadening up to room temperature. We show that this remarkable behavior is due to the very large Rabi splitting as compared to the LO phonon energy. Comment: 17 pages, 3 figures |
| Databáze: | OpenAIRE |
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