Cavity-driven ultrafast chiral optical switching
Floquet engineering, where an oscillating electric field modifies quantum states, is a promising tool to manipulate quantum systems coherently. For example, the valley-selective A.C. Stark effect can break time-reversal symmetry in monolayer transition metal dichalcogenides by lifting valley degeneracy. However, Floquet engineering has often been limited by the requirement of an ultrashort optical pulse with a high enough pulse energy. Here, based on a cavity structure with monolayer WSe<sub>2</sub>, we demonstrate that cavity effects can enhance effective Floquet dressing power by orders of magnitude. The strong enhancement also enables us to build an efficient chirality all-optical switch by the Floquet effect. Our study opens up the possibility to exploit Floquet engineering and other nonlinear phenomena for efficient optical devices of low-dimension materials.
Authors
- Yu-Hsun Chou (ORCID: https://orcid.org/0000-0002-3183-1398)
- Nathanial Lydick (ORCID: https://orcid.org/0000-0002-5991-4240)
- Xin Xie (ORCID: https://orcid.org/0000-0002-4483-8599)
- Qiuyang Li (ORCID: https://orcid.org/0000-0002-8192-3960)
- Takashi Taniguchi (ORCID: https://orcid.org/0000-0002-1467-3105)
- Kenji Watanabe (ORCID: https://orcid.org/0000-0003-3701-8119)
- Huiqiu Deng (ORCID: https://orcid.org/0000-0001-8986-104X)
- Stephen R. Forrest (ORCID: https://orcid.org/0000-0003-0131-1903)
- Yang Lü (ORCID: https://orcid.org/0000-0002-9280-2718)
- Bin Liu (ORCID: https://orcid.org/0009-0005-9488-9780)
- Yuze Liu
- Lingxiao Zhou (ORCID: https://orcid.org/0009-0009-6048-9788)
- Ruofan Hao
- Chenxi Liu (ORCID: https://orcid.org/0009-0004-7049-4496)
Institutions
- National Institute for Materials Science (JP)
- University of Michigan (US)
- Michigan United (US)
- National Cheng Kung University (TW)
Publication Details
- Published
- 2025-03-19
- DOI
- https://doi.org/10.1117/12.3040577
- Primary Topic
- Quantum optics and atomic interactions
- Type
- article
- Field-Weighted Citation Impact
- 0.00