A two-step quantum secure direct communication protocol with hyperentanglement

Gu, Bing-Lin; Huang, Yugai; Xia, Fang; Zhang, Chengyi

doi:10.1088/1674-1056/20/10/100309

Cited by 103 publications

(43 citation statements)

References 49 publications

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“…With the continuous study by researchers, there are many efficient QSDC protocols that have been presented in recent years, including protocols without using entanglement [12,13], and protocols using entanglement [14][15][16][17]. In addition, methods using two-way communication and quantum one-time pad are introduced to improve security [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Quantum Secure Direct Communication Based on Dense Coding and Detecting Eavesdropping with Four-Particle Genuine Entangled State

Pan

Sun

et al. 2015

Entropy

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A novel quantum secure direct communication protocol based on four-particle genuine entangled state and quantum dense coding is proposed. In this protocol, the four-particle genuine entangled state is used to detect eavesdroppers, and quantum dense coding is used to encode the message. Finally, the security of the proposed protocol is discussed. During the security analysis, the method of entropy theory is introduced, and two detection strategies are compared quantitatively by comparing the relationship between the maximal information that the eavesdroppers (Eve) can obtain, and the probability of being detected. Through the analysis we can state that our scheme is feasible and secure.

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Section: Introductionmentioning

confidence: 99%

Quantum Secure Direct Communication Based on Dense Coding and Detecting Eavesdropping with Four-Particle Genuine Entangled State

Pan

Sun

et al. 2015

Entropy

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“…Quantum cryptography is one of the most important applications of quantum information processing and can be divided into quantum key distribution (QKD) [1][2][3][4][5], quantum secret sharing (QSS) [6][7][8][9][10], quantum secure direct communication (QSDC) [11][12][13][14][15][16][17][18][19][20], etc. It is well known that authentication is an effective way to guarantee the integrity of the transmitted message and can be absorbed into both the classical cryptography and the quantum cryptography.…”

Section: Introductionmentioning

confidence: 99%

Quantum Authencryption with Two-Photon Entangled States for Off-Line Communicants

2015

Int J Theor Phys

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In this paper, a quantum authencryption protocol is proposed by using the twophoton entangled states as the quantum resource. Two communicants Alice and Bob share two private keys in advance, which determine the generation of two-photon entangled states. The sender Alice sends the two-photon entangled state sequence encoded with her classical bits to the receiver Bob in the manner of one-step quantum transmission. Upon receiving the encoded quantum state sequence, Bob decodes out Alice's classical bits with the twophoton joint measurements and authenticates the integrity of Alice's secret with the help of one-way hash function. The proposed protocol only uses the one-step quantum transmission and needs neither a public discussion nor a trusted third party. As a result, the proposed protocol can be adapted to the case where the receiver is off-line, such as the quantum E-mail systems. Moreover, the proposed protocol provides the message authentication to one bit level with the help of one-way hash function and has an information-theoretical efficiency equal to 100 %.

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“…It was first derived from the pioneering work of Bennett and Brassard [1] in 1984. At present, it has been expanded into many interesting branches, such as quantum key distribution (QKD) [1][2][3][4][5][6][7][8], quantum secret sharing (QSS) [9][10][11][12][13], quantum secure direct communication (QSDC) [14][15][16][17][18][19][20][21][22][23][24][25][26], and so on. On the aspect of QKD, many good works have been accomplished up to now.…”

Section: Introductionmentioning

confidence: 99%

Fault tolerant channel-encrypting quantum dialogue against collective noise

2014

Sci. China Phys. Mech. Astron.

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In this paper, two fault tolerant channel-encrypting quantum dialogue (QD) protocols against collective noise are presented. One is against collective-dephasing noise, while the other is against collective-rotation noise. The decoherent-free states, each of which is composed of two physical qubits, act as traveling states combating collective noise. Einstein-Podolsky-Rosen pairs, which play the role of private quantum key, are securely shared between two participants over a collective-noise channel in advance. Through encryption and decryption with private quantum key, the initial state of each traveling two-photon logical qubit is privately shared between two participants. Due to quantum encryption sharing of the initial state of each traveling logical qubit, the issue of information leakage is overcome. The private quantum key can be repeatedly used after rotation as long as the rotation angle is properly chosen, making quantum resource economized. As a result, their information-theoretical efficiency is nearly up to 66.7%. The proposed QD protocols only need single-photon measurements rather than two-photon joint measurements for quantum measurements. Security analysis shows that an eavesdropper cannot obtain anything useful about secret messages during the dialogue process without being discovered. Furthermore, the proposed QD protocols can be implemented with current techniques in experiment. quantum dialogue (QD), quantum encryption, information leakage, decoherent-free (DF) state, collective-dephasing noise, collective-rotation noise PACS number(s): 03.67.Dd, 03.67.Hk, 03.67.Pp Citation:Ye T Y. Fault tolerant channel-encrypting quantum dialogue against collective noise.

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A two-step quantum secure direct communication protocol with hyperentanglement

Abstract: A two-step quantum secure direct communication protocol with hyperentanglement * Gu Bin() a)b) † , Huang Yu-Gai() c) , Fang Xia() c) , and Zhang Cheng-Yi() a)b)

Cited by 103 publications

References 49 publications

Quantum Secure Direct Communication Based on Dense Coding and Detecting Eavesdropping with Four-Particle Genuine Entangled State

Quantum Secure Direct Communication Based on Dense Coding and Detecting Eavesdropping with Four-Particle Genuine Entangled State

Quantum Authencryption with Two-Photon Entangled States for Off-Line Communicants

Fault tolerant channel-encrypting quantum dialogue against collective noise

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