Valley-selective Rydberg Excitons in Monolayer WSe<sub>2</sub> Revealed by Magneto-photocurrent Spectroscopy

ORAL

Abstract

Monolayer transition metal dichalcogenides, with their greatly enhanced Coulomb interaction, are an ideal platform to host the Rydberg excitons in two dimensions. Here, we employ helicity-resolved magneto-photocurrent spectroscopy to identify Rydberg exciton states up to 11s in monolayer WSe2, from which the exciton binding energy and exciton radius can be extracted accurately. Photocurrent spectroscopy of monolayer WSe2 opens the path to study strong enhanced electron-electron interaction that leads to large nonlinearity such Rydberg exciton blockade, and it can be utilized for quantum information processing and quantum simulation.

*This work is primarily supported by AFOSR through Grant FA9550-18-1-0312. We also acknowledge support from ACS PRF through Grant 59957-DNI10 and NYSTAR through Focus Center-NY–RPI Contract C150117.

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Presenters

  • Tianmeng Wang

    • Rensselaer Polytechnic Institute

Authors

  • Tianmeng Wang

    • Rensselaer Polytechnic Institute

  • Zhipeng Li

    • Rensselaer Polytechnic Institute

  • Yunmei Li

    • The University of Texas at Dallas
    • Physics, The University of Texas at Dallas

  • Zhengguang Lu

    • National High Magnetic Field Lab
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Tallahassee, Florida

  • Shengnan Miao

    • Rensselaer Polytechnic Institute

  • Zhen Lian

    • Rensselaer Polytechnic Institute

  • Dmitry Smirnov

    • National High Magnetic Field Lab
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Tallahassee, Florida

  • Chuanwei Zhang

    • The University of Texas at Dallas
    • Physics, The University of Texas at Dallas
    • University of Texas at Dallas

  • Sufei Shi

    • Rensselaer Polytechnic Institute