Effects of frequency correlation in linear optical entangling gate operated with independent photons

Details Effects of frequency correlation in linear optical entangling gate operated with independent photons Effects of frequency correlation in linear optical entangling gate operated with independent photons

2007-04-29

arxiv.org/abs/0704.3763v2

Phys. Rev. A 76, 043825 (2007).

Physics

Quantum Physics

Replaced with published version

Scientific paper

10.1103/PhysRevA.76.043825

Bose-Einstein coalescence of independent photons at the surface of a beam splitter is the physical process that allows linear optical quantum gates to be built. When distinct parametric down-conversion events are used as an independent photon source, distinguishability arises form the energy correlation of each photon with its twin. We find that increasing the pump bandwidth may help in improving the visibility of non-classical interference and reaching a level of near perfect indistinguishability. PACS: 03.67.Mn, 42.65.Lm, 42.50.St.

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