 If you like modern optics, including coherent and squeezed states, beam transfer
matrices, polarization optics, as well as periodic systems,
click here.
 If you are interested in entanglement problems, particularly
Gaussian entanglements,
click here.
 If you are interested in entropy problems and Feynman's rest of the
universe, click here, and
here.
 Poincaré and Einstein? click here,
and here.
 Poincaré sphere for polarization optics and the Poincaré symmetry
for Einstein's relativity.
Click here.
