Scalable scheme for entangling multiple ququarts using linear optical elements

Details Scalable scheme for entangling multiple ququarts using linear optical elements Scalable scheme for entangling multiple ququarts using linear optical elements

2007-08-03

arxiv.org/abs/0708.0447v1

Physics

Quantum Physics

Scientific paper

10.1016/j.physleta.2007.05.033

We report a scalable linear optical scheme for generating entangled states of multiple ququarts in which the individual single-ququart state is prepared with the biphoton polarization state of frequency-nondegenerate spontaneous parametric down-conversion. The output state is calculated with the full consideration of the higher order effect (double-pair events) of spontaneous parametric down-conversion. Scalability to multiple-ququart entanglement is demonstrated with examples: linear optical entanglement of three and four individual biphoton ququarts.

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