An efficient protocol for the quantum private comparison of equality with W state

Wen, Liu; Wang, Yongbin; Jiang, Zhengtao

doi:10.1016/j.optcom.2011.02.017

Cited by 151 publications

(91 citation statements)

References 32 publications

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“…Studies have shown that each of these inequivalent classes plays an important role in uncovering the fundamentals of entanglement in quantum information science and in realizing a range of quantum * MansurSah@gmail.com † markstame@gmail.com ‡ ozdemir@ese.wustl.edu information processing tasks. For example, cluster states have been shown to be a universal resource for measurement-based quantum computing, GHZ states are known to be required for reaching consensus in quantum networks under specific constraints, and W states are required for leadership election in anonymous quantum networks [15] and for secure quantum communication [16][17][18][19]. The efficient preparation of largescale multipartite entangled states of certain classes is therefore a crucial step in quantum information processing.…”

Section: Introductionmentioning

confidence: 99%

Fusing multipleWstates simultaneously with a Fredkin gate

et al. 2014

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We propose an optical scheme to prepare large-scale entangled networks of W states. The scheme works by simultaneously fusing three polarization-encoded W states of arbitrary size via accessing only one qubit of each W state. It is composed of a Fredkin gate (controlled-swap gate), two fusion gates [as proposed in S. K. Ozdemir et al., New J. Phys. 13, 103003 (2011)], and an H -polarized ancilla photon. Starting with three n-qubit W states, the scheme prepares a new W state with 3(n − 1) qubits after postselection if both fusion gates operate successfully, i.e., a fourfold coincidence at the detectors. The proposed scheme reduces the cost of creating arbitrarily large W states considerably when compared to previously reported schemes.

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Section: Introductionmentioning

confidence: 99%

Fusing multipleWstates simultaneously with a Fredkin gate

et al. 2014

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“…, N}), respectively. For improving the efficiency and decreasing cost of the quantum resource, similar to [24,25], the secret information can be divided in to groups, and one group belonged to Alice and Bob are compared in every round of comparison. Here the size of every group is denoted by 4n (n > 1), then the groups can be denoted by…”

Section: Quantum Private Comparison Protocol With χ -Type Statementioning

confidence: 99%

“…However, in quantum scenario, Lo [21] pointed out that the equality function cannot be securely evaluated by twoside protocol. Therefore, to this end, some additional assumptions (e.g., bounded quantum storage [22]) or conditions (e.g., a third party [23][24][25]) should be provided.…”

mentioning

confidence: 99%

“…Moreover, after the execution, the third party cannot learn any information about the private inputs and even about the comparison result. After that Chen et al [24] and Liu et al [25] proposed new protocols based on the triplet entangled states Greenberger-HorneZeilinger (GHZ) and W state, respectively. In their protocols, the third party is assumed to be semi-honest.…”

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confidence: 99%

“…Here, we will give another new application of state |χ 00 . Similar to some previous QPC protocols [24,25], our protocol includes a semi-honest third party.…”

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confidence: 99%

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Quantum Private Comparison Using Genuine Four-Particle Entangled States

Jia

Wen

et al. 2011

Int J Theor Phys

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Quantum private comparison protocol with cloud quantum computing

Tan

Zhang

2015

Concurrency and Computation

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Because privacy problems with big data impede progress at all phases of the pipeline that can create value from data, Alice and Bob have to perform private queries in order to obtain the private comparison results of big data. Suppose that the cloud devices are with the capacity of conventional and quantum computation, an efficient quantum private comparison protocol with ring-trip transmission by safe cloud quantum computing in the quantum Internet is proposed. Two participant parties Alice and Bob, with the help of a semi-trusted third party and cloud device by simple quantum measurements and mathematical operation, can compare the equality of their secret information without revealing the content of secret information. We show that our protocol can resist the eavesdropper Eve's intercept-resend attack, entangle-measure attack, and Trojan horse attack to cloud device, participant's intercept-measure-resend attack, and third party's attack. The qubit efficiency of our protocol approaches to 100%. We also analyze the connection between Eve's obtained information and the fidelity of secret information in detail.

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An efficient protocol for the quantum private comparison of equality with W state

Cited by 151 publications

References 32 publications

Fusing multipleWstates simultaneously with a Fredkin gate

Fusing multipleWstates simultaneously with a Fredkin gate

Quantum Private Comparison Using Genuine Four-Particle Entangled States

Quantum private comparison protocol with cloud quantum computing

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