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Two-dimensional materials give access to the ultimate physical limits of Photonics with appealing properties for ultracompact optical components such as waveguides and modulators. Specifically, in monolayer semiconductors, a strong…

Van der Waals heterostructures formed by stacking two-dimensional atomic crystals are a unique platform for exploring new phenomena and functionalities. Interlayer excitons, bound states of spatially separated electron-hole pairs in van der…

Materials Science · Physics 2018-02-14 Zefang Wang , Yi-Hsin Chiu , Kevin Honz , Kin Fai Mak , Jie Shan

Recent experiments have demonstrated strong light-matter coupling between electromagnetic nanoresonators and pristine sheets of two-dimensional semiconductors, and it has been speculated whether these systems can enter the quantum regime…

Quantum Physics · Physics 2022-02-23 E. V. Denning , M. Wubs , N. Stenger , J. Mork , P. T. Kristensen

Excitons -- quasiparticles formed by the binding of an electron and a hole through electrostatic attraction -- hold promise in the fields of quantum light confinement and optoelectronic sensing. Atomically thin transition metal…

Van der Waals materials and heterostructures manifesting strongly bound room temperature exciton states exhibit emergent physical phenomena and are of a great promise for optoelectronic applications. Here, we demonstrate that nanostructured…

Two-dimensional semiconducting transition metal dichalcogenides embedded in optical microcavities in the strong exciton-photon coupling regime may lead to promising applications in spin and valley addressable polaritonic logic gates and…

Our ability to efficiently detect and generate far-infrared (i.e., terahertz) radiation is vital in areas spanning from biomedical imaging to interstellar spectroscopy. Despite decades of intense research, bridging the terahertz gap between…

Materials Science · Physics 2023-07-24 Zhao Tang , Greis J. Cruz , Fanhao Jia , Yabei Wu , Weiyi Xia , Peihong Zhang

Two-dimensional (2D) graphene-like layered semiconductors provide a new platform for materials research because of their unique mechanical, electronic and optical attributes. Their in-plane covalent bonding and dangling-bond-free surface…

Materials Science · Physics 2018-08-29 Zhiming Shi , Xinjiang Wang , Yuanhui Sun , Yawen Li , Lijun Zhang

We theoretically investigate exciton-polaritons in a two-dimensional (2D) semiconductor heterostructure, where a static magnetic field is applied perpendicular to the plane. To explore the interplay between magnetic field and a strong…

Mesoscale and Nanoscale Physics · Physics 2024-12-12 Emma Laird , Francesca M. Marchetti , Dmitry K. Efimkin , Meera M. Parish , Jesper Levinsen

Nonlinear interactions between excitons strongly coupled to light are key for accessing quantum many-body phenomena in polariton systems. Atomically-thin two-dimensional semiconductors provide an attractive platform for strong light-matter…

Two-dimensional transition metal dichalcogenides (TMDCs) have recently become attractive semiconductor materials for several optoelectronic applications, such as photodetection, light harvesting, phototransistors, light-emitting diodes, and…

Optics · Physics 2018-07-04 Alex Krasnok , Sergey Lepeshov , Andrea Alú

Charge separated interlayer excitons in transition metal dichalcogenide (TMDC) heterobilayers are being explored for moir\'e exciton lattices and exciton condensates. The presence of permanent dipole moments and the poorly screened Coulomb…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Jue Wang , Qianhui Shi , En-Min Shih , Lin Zhou , Wenjing Wu , Yusong Bai , Daniel A. Rhodes , Katayun Barmak , James Hone , Cory R. Dean , X. -Y. Zhu

Interlayer excitons in semiconducting bilayers separated by insulating hBN layers constitute a promising platform for investigation of strongly correlated bosonic phases. Here, we report an optical method for the generation and…

Mesoscale and Nanoscale Physics · Physics 2025-10-13 Alperen Tüğen , Anna M. Seiler , Arthur Christianen , Kenji Watanabe , Takashi Taniguchi , Martin Kroner , Ataç İmamoğlu

We study interlayer excitons in MoSe2/WSe2 heterobilayers, by combining lateral force microscopy and micro-photoluminescence spectroscopy. This allows us to correlate the spatial profile of the moir\'e superlattice with the distribution of…

Mesoscale and Nanoscale Physics · Physics 2025-11-21 L. Caussou , H. Moutaabbid , M. Bernard , F. Margaillan , T. Taniguchi , K. Watanabe , C. Lagoin , F. Dubin , V. Voliotis

We describe exciton-polariton modes formed by the interaction between excitons in a 2D layer of a transition metal dichalcogenide embedded in a cylindrical microcavity and the microcavity photons. For this, an expression for the excitonic…

Mesoscale and Nanoscale Physics · Physics 2020-04-22 José Nuno S. Gomes , Carlos Trallero-Giner , Nuno M. R. Peres , Mikhail I. Vasilevskiy

Atomically sharp 2D in-plane heterostructures with nanoscale interfaces provide a powerful platform for tailoring optical and electrical properties at the nanoscale, enabling novel device engineering and the exploration of new physical…

Monolayer semiconducting transition metal dichalcogenides possess broken inversion symmetry and strong spin-orbit coupling, which leads to unique spin-valley locking effect. In 2H stacked pristine multilayers, the spin-valley locking yields…

Mesoscale and Nanoscale Physics · Physics 2023-06-07 Yinong Zhang , Chengxin Xiao , Dmitry Ovchinnikov , Jiayi Zhu , Xi Wang , Takashi Taniguchi , Kenji Watanabe , Jiaqiang Yan , Wang Yao , Xiaodong Xu

Semiconductors in all dimensionalities ranging from 0D quantum dots and molecules to 3D bulk crystals support bound electron-hole pair quasiparticles termed as excitons. Over the past two decades, the emergence of a variety of…

Materials Science · Physics 2021-08-03 Surendra B. Anantharaman , Kiyoung Jo , Deep Jariwala

Two-dimensional (2D) transition metal dichalcogenides (TMDC) and their moir\'e interfaces have been demonstrated for correlated electron states, including Mott insulators and electron/hole crystals commensurate with moir\'e superlattices.…

Mesoscale and Nanoscale Physics · Physics 2024-01-08 Yusong Bai , Yiliu Li , Song Liu , Yinjie Guo , Jordan Pack , Jue Wang , Cory R. Dean , James Hone , X. -Y. Zhu

The electronic properties of macromolecular semiconductor thin films depend profoundly on their solid-state microstructure, which in turn is governed, among other things, by the processing conditions selected and the polymer chemical nature…