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Optoelectronics Letters

Programmable quantum logic gates using teleportation with non-maximally entangled states

Hui Li, Chunwen Li, Min Jiang

Published Jan 1, 2012• 1 citation
Publisher
DOI
10.1007/s11801-012-1035-1

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By eans of the primitive operations consisting of single-qubit gates.two-qubit controlled-not gates,Von Neuman measurement and classically controlled operations.,we construct efficient quantum logic networks for implementing probabilistic teleportation of a single qubit,a two-particle entangled state,and an N-particle entanglement.Based on the quantum networks,we show that after the partially entangled states are concentrated into maximal entanglement,the above three kinds of probabilistic teleportation are the same as the standard teleportation using the corresponding maximally entangled states as the quantum channels.
In this paper, we accomplish the teleportation of an unknown three-particle maximally entangled W state by using a spin-path entangled quantum channel which may be realized experimentally based on the advanced theory and technique in Bose–Einstein condensate (BEC) of molecule, micro-fabricated wave guide and simple quantum logic gate. Similarly, we can make an arbitrary n-particle entangled Greenberger–Horne–Zeilinger (GHZ) state (n ≥ 4) teleported through this kind of quantum channel. It may have important applications due to its resource-economic and practical features.