Directional Photocurrent Generated by Quantum Interference Control
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866915604577910784 |
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| author | Gong, Yiming Wang, Kai Cundiff, Steven T. |
| author_facet | Gong, Yiming Wang, Kai Cundiff, Steven T. |
| contents | Although the absorption of light in a bulk homogeneous semiconductor produces photocarriers with non-zero momentum, it generally does not produce a current in the absence of an applied electric field because equal amounts of carriers with opposite momentum are injected. The interference of absorption processes, for example, between one-photon and two-photon absorption, can produce a current because constructive interference for carriers with one momentum can correspond to destructive interference for carriers with the opposite momentum. We show that for the interference between two-photon and three-photon absorption, the current has a narrower angular spread, i.e., a ``beam'' of electrons in a specified direction is produced in the semiconductor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05318 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Directional Photocurrent Generated by Quantum Interference Control Gong, Yiming Wang, Kai Cundiff, Steven T. Other Condensed Matter Chemical Physics Optics Although the absorption of light in a bulk homogeneous semiconductor produces photocarriers with non-zero momentum, it generally does not produce a current in the absence of an applied electric field because equal amounts of carriers with opposite momentum are injected. The interference of absorption processes, for example, between one-photon and two-photon absorption, can produce a current because constructive interference for carriers with one momentum can correspond to destructive interference for carriers with the opposite momentum. We show that for the interference between two-photon and three-photon absorption, the current has a narrower angular spread, i.e., a ``beam'' of electrons in a specified direction is produced in the semiconductor. |
| title | Directional Photocurrent Generated by Quantum Interference Control |
| topic | Other Condensed Matter Chemical Physics Optics |
| url | https://arxiv.org/abs/2511.05318 |