Quantum Teleportation via GHZ-like State

Yang, Kan; Huang, Liusheng; Yang, Wei; Song, Fang

doi:10.1007/s10773-008-9827-6

Cited by 92 publications

(56 citation statements)

References 7 publications

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“…Recently, Yang et al [14] have devised a symmetric three-party QIS scheme of an arbitrary single-qubit by using only a GHZ-like state in Eq. (1) as quantum information carrier.…”

Section: Aqis Of An Arbitrary Two-qubit Statementioning

confidence: 99%

“…Inspired by some ideas of Refs. [14,15,22], we expect to generalize Yang et al' scheme [4] and research into the AQIS scheme of an arbitrary two-qubit state by using a GHZ-like state and a Bell state. Like that in Ref.…”

Section: Aqis Of An Arbitrary Two-qubit Statementioning

confidence: 99%

“…Generally speaking, the idea of QSS, in the literature, has been developed to the following three tasks: CC [11] (classical information is shared among parties by distributing QSS states through private secure channels, which are invulnerable to eavesdropping), CQ [9](classical information is shared among parties by distributing QSS states through public insecure channels, which are open for eavesdropping) and QQ [12][13][14][15][16][17][18](known as quantum state sharing or quantum information splitting, a secret quantum state is shared among parties by distributing QSS states through public channels). We consider the latter approach in the current paper.…”

mentioning

confidence: 99%

“…And then, instead of EPR pairs, Muralidharan et al [13] have proposed another QIS via five-qubit Brown state, it have enormously reduced the cost of quantum resource. Yang et al [14] have found a novel three-qubit GHZ-like state in experimental and demonstrated an arbitrary single-qubit state QIS based on Z basis measurement via it among three-party. Meanwhile, Zhang et al [15] have also designed a similar three-party QIS of an arbitrary n-qubit state by using n sets of GHZ-like states as quantum information carrier.…”

mentioning

confidence: 99%

“…[14,15,22,23], in this manuscript we firstly investigate the AQIS scheme of an arbitrary two-qubit state among three participants by using the maximally entangled states, which are made up of a three-qubit entangled GHZ-like state and a Bell state, as quantum information carrier, instead of multi-qubit entangled states. Different from most previous QIS ones, our scheme is claimed an asymmetrical quantum information splitting since that the number of the particles owned by each agent in the secure quantum channel is not necessarily equal except that the quantum information of the receiver is designated in advance.…”

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confidence: 99%

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Asymmetric Quantum Information Splitting of an Arbitrary N-qubit State via GHZ-like State and Bell States

2014

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In this manuscript, a novel and economical scheme for asymmetric quantum information splitting (AQIS) of an arbitrary N -qubit state is investigated. Instead of multiqubit entangled states, the maximally entangled states, which are made up of a three-qubit GHZ-like entangled state and (N − 1) sets of Bell states, are used as quantum information carrier. It is shown that the proposed AQIS scheme can be faithfully realized by performing appropriate Bell state measurements (BSMs), single qubit measurements (SMs) and local unitary operations (LUOs), rather than multi-qubit entanglement or multi-particle joint measurements, which make it more convenient and feasible in a practical application than some previous schemes. Furthermore, its intrinsic efficiency for qubits approaches 100 %, and the total efficiency really approaches the maximal value, which is higher than those of some previous symmetric quantum information splitting (QIS) schemes. Finally, the proposed scheme can be proven information-theoretically secure from the views of participant attack and outside attack in detail.

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“…Recently, Yang et al [14] have devised a symmetric three-party QIS scheme of an arbitrary single-qubit by using only a GHZ-like state in Eq. (1) as quantum information carrier.…”

Section: Aqis Of An Arbitrary Two-qubit Statementioning

confidence: 99%

Section: Aqis Of An Arbitrary Two-qubit Statementioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Asymmetric Quantum Information Splitting of an Arbitrary N-qubit State via GHZ-like State and Bell States

2014

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Teleportation of a Pure EPR State via GHZ-like State

Tsai

Hwang

2010

Int J Theor Phys

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Comment on “Quantum Teleportation via GHZ-Like State”

2010

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Recently Yang et al. (Int. J. Theor. Phys. 48:516, 2009) have shown that an unknown qubit can be teleported by using a particular GHZ-like state as quantum channel. However, there are several errors in the calculation which lead to incorrect conclusions. The errors have been indicated and corrected. It is also noted that their scheme and the independently proposed teleportation scheme of Zhang et al. (Int. J. Theor. Phys. 48:3331, 2009) uses quantum channel from the same family and any state of that family may be used for teleportation.Keywords Quantum teleportation · GHZ-like state · Fidelity In a recent paper Yang et al. [1] have shown that an unknown qubit can be teleported by using GHZ-like state as quantum channel. In [1] Yang et al. have made some mistakes in calculation. For example, in Sect. 2.1 of [1] they start preparing their channel with a quantum state |φ 1 = |0 1 + |1 1 which is not normalized. Ideally it should read as |φ 1 = 1 √ 2 (|0 1 + |1 1 ). This is important because without this normalization constant the third line of (1) of [1] will not follow from the second line of the same equation. As |φ 1 can be produced by operating Hadamard transformation H on the state |0 , the quantum circuit that prepares the GHZ-like quantum channel used by Yang et al. is essentially two EPR circuits attached in sequence in the cascaded manner (see Fig. 1).After preparing the GHZ-like quantum channel they use that channel to teleport an unknown qubit α|0 + β|1 . To do so, Alice keeps the first two qubits of the channel with

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Quantum Teleportation via GHZ-like State

Abstract: We propose an efficient teleportation scheme for an unknown state to either one of two receivers via GHZ-like states. We also discuss the fidelity of the quantum state when the control party is uncooperative.

Cited by 92 publications

References 7 publications

Asymmetric Quantum Information Splitting of an Arbitrary N-qubit State via GHZ-like State and Bell States

Asymmetric Quantum Information Splitting of an Arbitrary N-qubit State via GHZ-like State and Bell States

Teleportation of a Pure EPR State via GHZ-like State

Comment on “Quantum Teleportation via GHZ-Like State”

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