Floquet-Volkov interference in a semiconductor
An intense light field can dress both Bloch electrons inside crystals and photo-emitted free electrons in the vacuum, dubbed Floquet and Volkov states, respectively. These quantum states can further interfere coherently, modulating light-field dressed states. Here we report experimental evidence of the Floquet-Volkov interference in a semiconductor---black phosphorus. A highly asymmetric modulation of the spectral weight is observed for the Floquet-Volkov states, and such an asymmetry can be further controlled by rotating the pump polarization. Our work reveals the quantum interference between different light-field dressed electronic states, providing insights for material engineering on the ultrafast timescale.
Authors
- Peizhe Tang (ORCID: https://orcid.org/0000-0002-6345-5809)
- Shuyun Zhou (ORCID: https://orcid.org/0000-0002-9841-8610)
- Wenhui Duan (ORCID: https://orcid.org/0000-0001-9685-2547)
- Tianyun Lin (ORCID: https://orcid.org/0000-0002-4541-7171)
- Pu Yu (ORCID: https://orcid.org/0000-0002-5513-7632)
- Shaohua Zhou (ORCID: https://orcid.org/0000-0002-1820-5245)
- Benshu Fan (ORCID: https://orcid.org/0000-0003-3845-5855)
- Xuanxi Cai (ORCID: https://orcid.org/0009-0004-6444-9541)
- Haoyuan Zhong (ORCID: https://orcid.org/0000-0003-0453-3405)
- Changhua Bao (ORCID: https://orcid.org/0000-0002-8706-6541)
- Fei Wang (ORCID: https://orcid.org/0000-0002-3442-9396)
- Hong‐Yun Zhang (ORCID: https://orcid.org/0000-0002-0993-8949)
Institutions
- Center for Free-Electron Laser Science (DE)
- State Key Laboratory of Low-Dimensional Quantum Physics
- Beihang University (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-02-10
- DOI
- https://doi.org/10.1103/physrevb.111.l081106
- Citations
- 1
- Primary Topic
- Quantum and electron transport phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China