title: Experimental demonstration of three mutually orthogonal polarization states of entangled photons
abstract: Linearly polarized classical light can be expressed in a vertical and a horizontal component. Geometrically rotating vertically polarized light by 90 degrees will convert it to the orthogonal horizontal polarization. We have experimentally generated a two-photon state of light which evolves into an orthogonal state upon geometrical rotation by 60 degrees. Rotating this state by an additional 60 degrees will yield a state which is mutually orthogonal to the first two states. Generalizing this procedure, one can generate N+1 mutually orthogonal N-photon states that cyclicly evolve from one to another upon a geometric rotation by 180/(N+1) degrees.
authors: Department of Electronics, Royal Institute of Technology (KTH), Electrum 229, SE-164 40 Kista, Sweden.
authors: T
authors: Tsegaye
authors: J
authors: Soderholm
authors: M
authors: Atature
authors: A
authors: Trifonov
authors: G
authors: Bjork
authors: AV
authors: Sergienko
authors: BE
authors: Saleh
authors: MC
authors: Teich