Quantum Čerenkov Radiation: Spectral Cutoffs and the Role of Spin and Orbital Angular Momentum

  title={Quantum {\vC}erenkov Radiation: Spectral Cutoffs and the Role of Spin and Orbital Angular Momentum},
  author={Ido Kaminer and Maor Mutzafi and Amir Levy and Gal Harari and Hanan Herzig Sheinfux and Scott A. Skirlo and Jonathan Nemirovsky and John D. Joannopoulos and Mordechai Segev and Marin Soljavci'c},
  journal={Physical Review X},
We show that the well-known Cerenkov effect contains new phenomena arising from the quantum nature of charged particles. The Cerenkov transition amplitudes allow coupling between the charged particle and the emitted photon through their orbital angular momentum and spin, by scattering into preferred angles and polarizations. Importantly, the spectral response reveals a discontinuity immediately below a frequency cutoff that can occur in the optical region. Near this cutoff, the intensity of the… 

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