Electron-Photon Chern Number in Cavity-Embedded 2D Moiré Materials

Danh Phuong Nguyen; Geva Arwas; Zuzhang Lin; Wang Yao; Cristiano Ciuti

doi:10.1103/PhysRevLett.131.176602

Electron-Photon Chern Number in Cavity-Embedded 2D Moiré Materials

Danh Phuong Nguyen, Geva Arwas, Zuzhang Lin, Wang Yao, Cristiano Ciuti

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

10 Scopus citations

Abstract

We explore theoretically how the topological properties of 2D materials can be manipulated by cavity quantum electromagnetic fields for both resonant and off-resonant electron-photon coupling, with a focus on van der Waals moiré superlattices. We investigate an electron-photon topological Chern number for the cavity-dressed energy minibands that is well defined for any degree of hybridization and entanglement of the electron and photon states. While an off-resonant cavity mode can renormalize electronic topological phases that exist without cavity coupling, we show that when the cavity mode is resonant to electronic miniband transitions, new and higher electron-photon Chern numbers can emerge.

Original language	English
Article number	176602
Journal	Physical Review Letters
Volume	131
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.131.176602
State	Published - 27 Oct 2023
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.131.176602

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title = "Electron-Photon Chern Number in Cavity-Embedded 2D Moir{\'e} Materials",

abstract = "We explore theoretically how the topological properties of 2D materials can be manipulated by cavity quantum electromagnetic fields for both resonant and off-resonant electron-photon coupling, with a focus on van der Waals moir{\'e} superlattices. We investigate an electron-photon topological Chern number for the cavity-dressed energy minibands that is well defined for any degree of hybridization and entanglement of the electron and photon states. While an off-resonant cavity mode can renormalize electronic topological phases that exist without cavity coupling, we show that when the cavity mode is resonant to electronic miniband transitions, new and higher electron-photon Chern numbers can emerge.",

author = "Nguyen, {Danh Phuong} and Geva Arwas and Zuzhang Lin and Wang Yao and Cristiano Ciuti",

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AU - Nguyen, Danh Phuong

AU - Arwas, Geva

AU - Lin, Zuzhang

AU - Yao, Wang

AU - Ciuti, Cristiano

PY - 2023/10/27

Y1 - 2023/10/27

N2 - We explore theoretically how the topological properties of 2D materials can be manipulated by cavity quantum electromagnetic fields for both resonant and off-resonant electron-photon coupling, with a focus on van der Waals moiré superlattices. We investigate an electron-photon topological Chern number for the cavity-dressed energy minibands that is well defined for any degree of hybridization and entanglement of the electron and photon states. While an off-resonant cavity mode can renormalize electronic topological phases that exist without cavity coupling, we show that when the cavity mode is resonant to electronic miniband transitions, new and higher electron-photon Chern numbers can emerge.

AB - We explore theoretically how the topological properties of 2D materials can be manipulated by cavity quantum electromagnetic fields for both resonant and off-resonant electron-photon coupling, with a focus on van der Waals moiré superlattices. We investigate an electron-photon topological Chern number for the cavity-dressed energy minibands that is well defined for any degree of hybridization and entanglement of the electron and photon states. While an off-resonant cavity mode can renormalize electronic topological phases that exist without cavity coupling, we show that when the cavity mode is resonant to electronic miniband transitions, new and higher electron-photon Chern numbers can emerge.

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DO - 10.1103/PhysRevLett.131.176602

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Electron-Photon Chern Number in Cavity-Embedded 2D Moiré Materials

Abstract

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