2014
DOI: 10.1103/physreva.90.022319
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Multipartite dense coding versus quantum correlation: Noise inverts relative capability of information transfer

Abstract: A highly entangled bipartite quantum state is more advantageous for the quantum dense coding protocol than states with low entanglement. Such a correspondence, however, does not exist even for pure quantum states in the multipartite domain. We establish a connection between the multiparty capacity of classical information transmission in quantum dense coding and several multipartite quantum correlation measures of the shared state, used in the dense coding protocol. In particular, we show that for the noiseles… Show more

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Cited by 28 publications
(25 citation statements)
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“…Monogamy scores of quantum discord and violation of Bell inequalities have also been connected [166,167]. Tripartite dense coding capacities are also shown to have relations with the monogamy score of quantum discord [168,169].…”
Section: Relation With Other Multiparty Measuresmentioning
confidence: 88%
See 1 more Smart Citation
“…Monogamy scores of quantum discord and violation of Bell inequalities have also been connected [166,167]. Tripartite dense coding capacities are also shown to have relations with the monogamy score of quantum discord [168,169].…”
Section: Relation With Other Multiparty Measuresmentioning
confidence: 88%
“…Monogamy scores of entanglement and quantum discord have also been related to the multiparty dense coding capacity between several senders and a single receiver [169]. In particular, it was shown that in the noiseless scenario, among all multiqubit pure states with an arbitrary but fixed multiparty dense coding capacity, the generalized GHZ state has the maximum monogamy score for quantum discord, i.e., ifC(|ψ ) =C(|gGHZ ), it implies δ D (|ψ ) ≤ δ D (|gGHZ ), whereC(ρ 12...N ) = log 2 d 1...N −1 +S(ρ N )− S(ρ 1...N ), with ρ 1...N being a state shared between N − 1 senders, 1, 2, .…”
Section: Relation With Multiport Dense Coding Capacitymentioning
confidence: 99%
“…Theorem 10 [756]: Among all multiparty pure states having equal amount of δ D , C multi is bounded below by that of the gGHZ state. Proof: For an arbitrary pure state |ψ 12...N , the discord monogamy score is given by…”
Section: Connection With Dense Codingmentioning
confidence: 99%
“…Monogamy scores of entanglement and quantum discord have also been related to the multiparty dense coding capacity between several senders and a single receiver [169]. In particular, it was shown that in the noiseless scenario, among all multiqubit pure states with an arbitrary but fixed multiparty dense coding capacity, the generalized GHZ state has the maximum monogamy score for quantum discord, i.e., ifC(|ψ ) =C(|gGHZ ), it implies N being a state shared between N − 1 senders, 1, 2, .…”
Section: Relation With Multiport Dense Coding Capacitymentioning
confidence: 99%