Teleportation and dense coding via a multiparticle quantum channel of the GHZ-class
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A set of protocols for teleportation and dense coding schemes based on a multiparticle quantum channel, represented by the $N$-particle entangled states of the GHZ class, is introduced. Using a found representation for the GHZ states, it was shown that for dense coding schemes enhancement of the classical capacity of the channel due from entanglement is $N/N-1$. Within the context of our schemes it becomes clear that there is no one-to one correspondence between teleportation and dense coding schemes in comparison when the EPR channel is exploited. A set of schemes, for which two additional operations as entanglement and disentanglement are permitted, is considered.
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2011 ◽
Vol 09
(06)
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pp. 1437-1448
2020 ◽
Vol 34
(28)
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pp. 2050261
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2015 ◽
Vol 13
(05)
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pp. 1550024
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2004 ◽
Vol 18
(20n21)
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pp. 2953-2961
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2000 ◽
Vol 2
(6)
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pp. 786-791
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