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Phys Rev Lett. 2000 Dec 11;85(24):5013-7.

Experimental demonstration of three mutually orthogonal polarization states of entangled photons

Author information

  • 1Department of Electronics, Royal Institute of Technology (KTH), Electrum 229, SE-164 40 Kista, Sweden.

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.

PMID:
11102175
DOI:
10.1103/PhysRevLett.85.5013
[PubMed - as supplied by publisher]
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