Novel Quantum Deterministic Key Distribution Protocols with Entangled States

Zhou, Nanrun; Wang, Lijun; Ding, Jie; Gong, Li-Hua; Zuo, Xiangwu

doi:10.1007/s10773-010-0387-1

Cited by 24 publications

(14 citation statements)

References 23 publications

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“…QKD has progressed quickly since the QKD protocol was first proposed by Bennett and Brassard in 1984 [1]. On the other hand, a novel concept, Quantum Secure Direct communication (QSDC) has been proposed and pursued attracted much attention [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Different from QKD whose goal is to generate a private key between two remote parties, the QSDC communicates the secret messages directly without generating a key in advance and then encrypting the secret messages.…”

Section: Introductionmentioning

confidence: 99%

“…Recent research on quantum computation and quantum information allowed to use it for real world scenarios [17][18][19][20][21][22][23][24][25][26]. Corresponding to quantum information, quantum data hiding including quantum watermarking and quantum steganography can be employed to achieve covert communication of quantum or classical messages.…”

Section: Introductionmentioning

confidence: 99%

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Quantum Watermarking Using Entanglement Swapping

Fatahi

Naseri

2012

Int J Theor Phys

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Digital watermarking is the process of embedding information into a digital signal in a way that is difficult to remove. In this article a secure quantum watermarking using entanglement swapping is proposed. Here the entanglement swapping is employed to build up a hidden layer of secure message under the conventional first layer of secure information sequence. In this protocol by insuring the security of transmission of the first layer of information sequence the security of the hidden secret messages is also proved to be reliable regardless of whether the hidden channel has been detected or not.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantum Watermarking Using Entanglement Swapping

Fatahi

Naseri

2012

Int J Theor Phys

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“…Comparing with QKD, DSQC can be used to obtain deterministic information, not a randomly binary string. So far, DSQC has been actively pursued by some groups [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. For example, in 2002, Beige et al [28] first proposed a DSQC scheme based on single-photon two-qubit states.…”

Section: Introductionmentioning

confidence: 99%

“…Dong et al [39] put forward a protocol for DSQC against collective-dephasing noise by using EPR pairs and auxiliary photons. In 2010, Zhou et al [40] proposed two DSQC protocols by utilizing Bell states and GHZ states respectively. Recently, Chen et al [41] proposed a new efficient DSQC scheme which allows a group of mutually distrustful players to perform the summation computation.…”

Section: Introductionmentioning

confidence: 99%

High-capacity Deterministic Secure Four-qubit W State Protocol for Quantum Communication Based on Order Rearrangement of Particle Pairs

et al. 2011

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A novel high-capacity protocol for deterministic secure quantum communication with four-qubit symmetric W state is proposed. In the presented protocol, the secret messages can be encoded on the four-qubit symmetric W states by employing four two-particle unitary operations and directly decoded by utilizing the corresponding measurements in Bell basis or single particle basis. It has a high capacity as each W state can carry two bits of secret information, and has a high intrinsic efficiency because almost all the instances are useful. The security of this communication can be ensured by the decoy photon checking technique and the order rearrangement of particle pairs technique. Furthermore, this protocol is feasible with present-day technique.

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“…1, the atom with momentum p 0 (−p 0 ) traveling along the path I (II) will fly into the adjacent cavity B (C) which is initially prepared in vacuum state and is perpendicular to the path I (II). With the aid of atom trapping equipments, the atoms are trapped in the cavity B or cavity C. According to (4), if the cavity A is in the state |0 A , then all of the N atoms will be trapped in the cavity B and the number of the atoms in the cavity C is zero; in contrast, if the cavity A is in the state |1 A , then the cavity C will contain N atoms and no atom is in cavity B. Therefore, in the form of number representation the state of the cavity A and the atoms contained in cavities B and C can be rewritten as…”

mentioning

confidence: 99%

A Cavity-QED-Based Scheme for Generating Multi-photon NOON State

Xiao

Zeng

2012

Int J Theor Phys

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We present a scheme for generating a multi-photon NOON state within the context of cavity QED. In the present scheme, an N -atom entangled state between two separated cavities is established based on atomic Bragg scattering firstly, and then the entanglement is transferred from atoms to the fields of the two cavities via stimulated Raman adiabatic passage. With the photons emitting from the cavities along two different directions, the maximally path-entangled optical NOON state is obtained.Keywords Multi-photon NOON state · Atomic Bragg scattering · Stimulated Raman adiabatic passage Entanglement, a nonclassical correlation between two quantum systems, has done many wonders when applied in such fields as information, computation, metrology etc., and thus it urges the blossom of many new research fields, such as quantum key distribution [1-4, 22], quantum cryptography [5], quantum dense coding [6], quantum teleportation [7], and so on. There are many different classes of entangled state such as GHZ-class state, W-class state, etc., which display different properties and have different applications. In terms of performing supersensitive measurements, the two-mode maximally entangled Fock state, the socalled NOON state, with the form of (|N 0 1,2 + e iϕ |0N 1,2 )/ √ 2 is of particular interest due to its application in improving the sensitivity of phase measurement of an interferometer beyond the shot-noise limit [8,9] and exceeding the Rayleigh limit in imaging [10]. It has been proved that by using NOON state the measurement accuracy will have a factor of √ N improvement and saturate the Heisenberg limit, which has been regarded as the fundamental limit set by the quantum mechanics and can not be surpassed. This enhancement also has great positive significance in relation to quantum information processing in consideration

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Novel Quantum Deterministic Key Distribution Protocols with Entangled States

Cited by 24 publications

References 23 publications

Quantum Watermarking Using Entanglement Swapping

Quantum Watermarking Using Entanglement Swapping

High-capacity Deterministic Secure Four-qubit W State Protocol for Quantum Communication Based on Order Rearrangement of Particle Pairs

A Cavity-QED-Based Scheme for Generating Multi-photon NOON State

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