Reaching the efficiency limit of arbitrary polarization transformation with non-orthogonal metasurfaces

Polarization transformation is at the foundation of modern applications in photonics and quantum optics. Notwithstanding their applicative interests, basic theoretical and experimental efforts are still needed to exploit the full potential of polarization optics. Here, we reveal that the coherent superposition of two non-orthogonal eigen-states of Jones matrix can improve drastically the efficiency of arbitrary polarization transformation with respect to classical orthogonal polarization optics. By exploiting metasurface with stacking and twisted configuration, we have implemented a powerful configuration, termed “non-orthogonal metasurfaces”, and have experimentally demonstrated arbitrary input-output…

• NS
  National Science Foundation

  Award: 2021011
• AN
  Agence Nationale de la Recherche

  Award: ANR-20-CE09-0027
• NN
  National Natural Science Foundation of China

  Awards: 2023QNRC001, 62171165, U23B2014, 2021011, 62301193
• FR
  Fundamental Research Funds for the Central Universities
• HE
  HORIZON EUROPE European Innovation Council

  Awards: 101046424, 2021-101046424