Projection of two biphoton qutrits onto a maximally entangled state

A. Halevy*, E. Megidish, T. Shacham, L. Dovrat, H. S. Eisenberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Bell state measurements, in which two quantum bits are projected onto a maximally entangled state, are an essential component of quantum information science. We propose and experimentally demonstrate the projection of two quantum systems with three states (qutrits) onto a generalized maximally entangled state. Each qutrit is represented by the polarization of a pair of indistinguishable photons-a biphoton. The projection is a joint measurement on both biphotons using standard linear optics elements. This demonstration enables the realization of quantum information protocols with qutrits, such as teleportation and entanglement swapping.

Original languageAmerican English
Article number130502
JournalPhysical Review Letters
Issue number13
StatePublished - 29 Mar 2011


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