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Optica Publishing Group
  • Conference on Lasers and Electro-Optics/Pacific Rim 2007
  • (Optica Publishing Group, 2007),
  • paper TuH1_1

Biphoton ququarts and their entanglement

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Abstract

A four-dimensional quantum system (ququart) can be constructed by using the biphoton polarization states of frequency-nondegenerate spontaneous parametric down-conversion. We first discuss how to generate and characterize general single-ququart states with varying degrees of mixedness. We then discuss schemes to entangle multiple biphoton ququarts using linear optics and coincidence post-selection.

© 2007 IEEE

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