Eigen State Transmission of Birefringent Optical Fibers Using Entangled Two Photons
Takeshi Ozeki, Atsushi Masubuchi · Kluwer Academic Publishers eBooks · 2005
When two photons are coded into entangled polarization states, one of eigen states of direct product of fiber transfer function matrix is found to be independent of transmission fiber birefringence. The eigen state is the entangled singlet state Ψ − , one of the Bell states. The entangled polarization state Ψ − can be transmitted through optical fiber without the degradation in fidelity.