Multi-path entanglement of two photons

Details Multi-path entanglement of two photons Multi-path entanglement of two photons

2008-09-26

arxiv.org/abs/0809.4575v3

Phys. Rev. Lett. 102, 153902 (2009)

Physics

Quantum Physics

4 pages, 3 figures, revtex, revised version

Scientific paper

10.1103/PhysRevLett.102.153902

We present a novel optical device based on an integrated system of micro-lenses and single mode optical fibers. It allows to collect and direct into many modes two photons generated by spontaneous parametric down conversion. By this device multiqubit entangled states and/or multilevel qu-$d$it states of two photons, encoded in the longitudinal momentum degree of freedom, are created. The multi-path photon entanglement realized by this device is expected to find important applications in modern quantum information technology.

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