Trapping-induced quantum beats in a van-der-Waals heterostructure microcavity observed by two-dimensional micro-spectroscopy

Donghai Li; Hangyong Shan; Heiko Knopf; Kenji Watanabe; Takashi Taniguchi; Ying Qin; Sefaattin Tongay; Falk Eilenberger; Sven Hofling; Christian Schneider; Tobias Brixner

doi:10.1364/OME.492545

Trapping-induced quantum beats in a van-der-Waals heterostructure microcavity observed by two-dimensional micro-spectroscopy

Donghai Li, Hangyong Shan, Heiko Knopf, Kenji Watanabe, Takashi Taniguchi, Ying Qin, Sefaattin Tongay, Falk Eilenberger, Sven Hofling, Christian Schneider, Tobias Brixner

Engineering, Ira A. Fulton Schools of (IAFSE)

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Spatial confinement has been frequently engineered to control the flow and relaxation dynamics of exciton polaritons. While widely investigated in GaAs microcavities, excitonpolariton coupling between discretized polariton modes arising from spatially confined 2D crystals been has been less exhaustively studied. Here, we use coherent 2D photoluminescencedetected micro-spectroscopy to detect oscillating 2D peaks exclusively from a spatial trap in a microcavity with an embedded van-der-Waals heterostructure at room temperature. We observe a wide variation of oscillatory phases as a function of spectral position within the 2D spectrum, which suggests the existence of a coupling between the discretized polariton modes. The latter is accompanied by the generation of coherent phonons.

Original language	English (US)
Pages (from-to)	2798-2807
Number of pages	10
Journal	Optical Materials Express
Volume	13
Issue number	10
DOIs	https://doi.org/10.1364/OME.492545
State	Published - Oct 1 2023

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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10.1364/OME.492545

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title = "Trapping-induced quantum beats in a van-der-Waals heterostructure microcavity observed by two-dimensional micro-spectroscopy",

abstract = "Spatial confinement has been frequently engineered to control the flow and relaxation dynamics of exciton polaritons. While widely investigated in GaAs microcavities, excitonpolariton coupling between discretized polariton modes arising from spatially confined 2D crystals been has been less exhaustively studied. Here, we use coherent 2D photoluminescencedetected micro-spectroscopy to detect oscillating 2D peaks exclusively from a spatial trap in a microcavity with an embedded van-der-Waals heterostructure at room temperature. We observe a wide variation of oscillatory phases as a function of spectral position within the 2D spectrum, which suggests the existence of a coupling between the discretized polariton modes. The latter is accompanied by the generation of coherent phonons.",

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T1 - Trapping-induced quantum beats in a van-der-Waals heterostructure microcavity observed by two-dimensional micro-spectroscopy

AU - Li, Donghai

AU - Shan, Hangyong

AU - Knopf, Heiko

AU - Watanabe, Kenji

AU - Taniguchi, Takashi

AU - Qin, Ying

AU - Tongay, Sefaattin

AU - Eilenberger, Falk

AU - Hofling, Sven

AU - Schneider, Christian

AU - Brixner, Tobias

PY - 2023/10/1

Y1 - 2023/10/1

N2 - Spatial confinement has been frequently engineered to control the flow and relaxation dynamics of exciton polaritons. While widely investigated in GaAs microcavities, excitonpolariton coupling between discretized polariton modes arising from spatially confined 2D crystals been has been less exhaustively studied. Here, we use coherent 2D photoluminescencedetected micro-spectroscopy to detect oscillating 2D peaks exclusively from a spatial trap in a microcavity with an embedded van-der-Waals heterostructure at room temperature. We observe a wide variation of oscillatory phases as a function of spectral position within the 2D spectrum, which suggests the existence of a coupling between the discretized polariton modes. The latter is accompanied by the generation of coherent phonons.

AB - Spatial confinement has been frequently engineered to control the flow and relaxation dynamics of exciton polaritons. While widely investigated in GaAs microcavities, excitonpolariton coupling between discretized polariton modes arising from spatially confined 2D crystals been has been less exhaustively studied. Here, we use coherent 2D photoluminescencedetected micro-spectroscopy to detect oscillating 2D peaks exclusively from a spatial trap in a microcavity with an embedded van-der-Waals heterostructure at room temperature. We observe a wide variation of oscillatory phases as a function of spectral position within the 2D spectrum, which suggests the existence of a coupling between the discretized polariton modes. The latter is accompanied by the generation of coherent phonons.

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Trapping-induced quantum beats in a van-der-Waals heterostructure microcavity observed by two-dimensional micro-spectroscopy

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