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Spin dynamics in the Kapitza-Dirac effect
- Source :
- Phys. Rev. Lett. 109, 043601 (2012)
- Publication Year :
- 2012
-
Abstract
- Electron spin dynamics in Kapitza-Dirac scattering from a standing laser wave of high frequency and high intensity is studied. We develop a fully relativistic quantum theory of the electron motion based on the time-dependent Dirac equation. Distinct spin dynamics, with Rabi oscillations and complete spin-flip transitions, is demonstrated for Kapitza-Dirac scattering involving three photons in a parameter regime accessible to future high-power X-ray laser sources. The Rabi frequency and, thus, the diffraction pattern is shown to depend crucially on the spin degree of freedom.
- Subjects :
- Quantum Physics
Physics - Optics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 109, 043601 (2012)
- Publication Type :
- Report
- Accession number :
- edsarx.1204.0239
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.109.043601