@article{21555,
  abstract     = {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 wave function. The second stage uses an adjusted optical near field to rotate the spin states utilizing the spin-dependent wave-packet 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 tabletop lasers.},
  author       = {Woodahl, Clarisse and Murillo, Melanie and Roques-Carmes, Charles and Karnieli, Aviv and Miller, David A. B. and Solgaard, Olav},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {6},
  publisher    = {American Physical Society},
  title        = {{On-chip laser-driven free-electron spin polarizer}},
  doi          = {10.1103/3c1m-d3hh},
  volume       = {136},
  year         = {2026},
}