Higher-order optical-polarization
  Polarization properties of optical field in Schr\"odinger Cat states or Even- or Odd-Coherent states are investigated by generalizing usual concept of optical-polarization to render the concept of Higher-order optical-polarization. It is observed that Higher-order optical-polarization is a basis-dependent property of optical field. 
Ravi S.Singh and Hari Prakash
physics.optics