Entanglement swapping between multi-qudit systems

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This publication doesn't include Institute of Computer Science. It includes Faculty of Informatics. Official publication website can be found on muni.cz.

Authors	BOUDA Jan BŮŽEK Vladimír
Year of publication	2001
Type	Article in Periodical
Magazine / Source	Journal of Physics A
MU Faculty or unit	Faculty of Informatics
Citation
Web	http://www.iop.org/EJ/S/UNREG/TJsHx2nFMX6wU3BruXWSpQ/abstract/0305-4470/34/20/304
Field	Theoretical physics
Keywords	entanglement; quantum information
Description	We generalize the entanglement swapping scheme originally proposed for two pairs of qubits to an arbitrary number q of systems composed from an arbitrary number mj of qudits. Each of the systems is supposed to be prepared in a maximally entangled state of mj qudits, while different systems are not correlated at all. We show that when a set of qj = 1 aj particles (from each of the q systems aj particles are measured) is subjected to a generalized Bell-type measurement, the resulting set of qj = 1 (mj-aj) particles will collapse into a maximally entangled state.
Related projects:	Informatics as the third methodology Non-sequential Models of Computing -- Quantum and Concurrent Distributed Models of Computing