Various combinations of these can be put together to create any particular polarization state.
Consider two eigenmodes that are the 0 and 90 linear polarization states.
Liquid crystal displays have traditionally been slow to change from one polarization state to another.
Strictly speaking, a circular core is not required in order to have two degenerate polarization states.
The other contains a mixture of polarization states.
These emerge below as the two polarization states of eqn (10.11).
These polarization states can then be added up to create elliptically polarized light.
After the charge is removed, the dipoles retain their polarization state.
The variable measured is most often the light's intensity but could also, for instance, be the polarization state.
The polarization state of the photon is proportional to the field.