Multipartite entangled magnon states as quantum communication channels release_qrcdpeofgve6xlgmsesvosmqje

by Sriram Prasath E., Sreraman Muralidharan, Chiranjib Mitra, Prasanta K. Panigrahi

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2009  

Abstract

We explicate conditions under which, the two magnon state becomes highly entangled and is useful for several quantum communication protocols. This state, which is experimentally realizable in quantum dots using Heisenberg exchange interaction, is found to be suitable for carrying out deterministic teleportation of an arbitrary two qubit composite system. Further, conditions for which the channel capacity reaches "Holevo bound", allowing maximal amount of classical information to be encoded, are derived. Later, an explicit protocol for the splitting and sharing of a two qubit entangled state among two parties, using this state as an entangled resource, is demonstrated.
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Date   2009-09-16
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arXiv  0905.1233v2
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