Projection of two biphoton qutrits onto a maximally entangled state |
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Authors: | Halevy A Megidish E Shacham T Dovrat L Eisenberg H S |
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Institution: | Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel. |
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Abstract: | 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. |
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