Attosecond-resolved coherent control of zone-folded acoustic phonons in silicon carbide
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866914150679052288 |
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| author | Matsumoto, Hiromu Maruhashi, Tsukasa Kayanuma, Yosuke Han, Yadong Hu, Jianbo Nakamura, Kazutaka G. |
| author_facet | Matsumoto, Hiromu Maruhashi, Tsukasa Kayanuma, Yosuke Han, Yadong Hu, Jianbo Nakamura, Kazutaka G. |
| contents | Zone-folded acoustic phonons (6 THz) in 4H silicon carbide (SiC) have been coherently excited using a femtosecond near-infrared pulse and measured through transient reflectivity with a pump and probe protocol. Their amplitude is coherently controlled with 300-attoseconds precision and the results show interference fringe patterns due to electronic and phonon interference. The results are well reproduced by a model calculation with two electronic and phonon levels and an impulsive stimulated Raman process. Using the model, we obtain the analytical form of the coherent control scheme at an off-resonant condition. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_08044 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Attosecond-resolved coherent control of zone-folded acoustic phonons in silicon carbide Matsumoto, Hiromu Maruhashi, Tsukasa Kayanuma, Yosuke Han, Yadong Hu, Jianbo Nakamura, Kazutaka G. Materials Science Zone-folded acoustic phonons (6 THz) in 4H silicon carbide (SiC) have been coherently excited using a femtosecond near-infrared pulse and measured through transient reflectivity with a pump and probe protocol. Their amplitude is coherently controlled with 300-attoseconds precision and the results show interference fringe patterns due to electronic and phonon interference. The results are well reproduced by a model calculation with two electronic and phonon levels and an impulsive stimulated Raman process. Using the model, we obtain the analytical form of the coherent control scheme at an off-resonant condition. |
| title | Attosecond-resolved coherent control of zone-folded acoustic phonons in silicon carbide |
| topic | Materials Science |
| url | https://arxiv.org/abs/2511.08044 |