On-Chip Laser-Driven Free-Electron Spin Polarizer
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912901250416640 |
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| author | Woodahl, Clarisse Murillo, Melanie Roques-Carmes, Charles Karnieli, Aviv Miller, David A. B. Solgaard, Olav |
| author_facet | Woodahl, Clarisse Murillo, Melanie Roques-Carmes, Charles Karnieli, Aviv Miller, David A. B. Solgaard, Olav |
| contents | Spin-polarized electron beam sources enable studies of spin-dependent electric and magnetic effects at the nanoscale. We propose a method of creating spin-polarized electrons on an integrated photonics chip by laser driven nanophotonic fields. A two-stage interaction separated by a free space drift length is proposed, where the first stage and drift length introduces spin-dependent characteristics into the probability distribution of the electron wavefunction. The second stage uses an adjusted optical near-field to rotate the spin states utilizing the spin-dependent wavepacket distribution to produce electrons with high ensemble average spin expectation values. This platform provides an integrated and compact method to generate spin-polarized electrons, implementable with millimeter scale chips and table-top lasers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_17993 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On-Chip Laser-Driven Free-Electron Spin Polarizer Woodahl, Clarisse Murillo, Melanie Roques-Carmes, Charles Karnieli, Aviv Miller, David A. B. Solgaard, Olav Quantum Physics Spin-polarized electron beam sources enable studies of spin-dependent electric and magnetic effects at the nanoscale. We propose a method of creating spin-polarized electrons on an integrated photonics chip by laser driven nanophotonic fields. A two-stage interaction separated by a free space drift length is proposed, where the first stage and drift length introduces spin-dependent characteristics into the probability distribution of the electron wavefunction. The second stage uses an adjusted optical near-field to rotate the spin states utilizing the spin-dependent wavepacket distribution to produce electrons with high ensemble average spin expectation values. This platform provides an integrated and compact method to generate spin-polarized electrons, implementable with millimeter scale chips and table-top lasers. |
| title | On-Chip Laser-Driven Free-Electron Spin Polarizer |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.17993 |