Teleportation of composite systems for communication and information processing

Authors:
Sebastien G. R. Louis;Andrew D. Greentree;W. J. Munro;Kae Nemoto
Affiliations:
Department of Informatics, School of Multidisciplinary Sciences, The Graduate University for Advanced Studies, National Institute of Informatics, Chiyoda-ku, Tokyo, Japan;Centre for Quantum Computer Technology, School of Physics, University of Melbourne, Parkville, Victoria, Australia;Hewlett-Packard Laboratories, Stoke Gifford, Bristol, United Kingdom and National Institute of Informatics, Hitotsubashi, Chiyoda-ku, Tokyo, Japan;National Institute of Informatics, Chiyoda-ku, Tokyo, Japan
Venue:
Quantum Information & Computation
Year:
2009

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Abstract

We describe two protocols for efficient data transmission using a single passive bus. Different types of interactions are obtained enabling the deterministic transfer and teleportation of composite quantum systems for arbitrary subsystem dimension and for arbitrary numbers of subsystems. The subsystems may become entangled in the transmission in which case the protocols can serve generalized teleportation based information processing as well as storage and transmission functions. We explore the cases of two qubits and two qutrits in detail, obtaining a maximally entangling mapping of the composite systems and discuss the use of a continuous variable bus.