Quantum Secure Direct Communication Achieved by Using Multi-Entanglement

Li, Wenlin; Chen, Junbo; Wang, Xiaolong; Li, Chong

doi:10.1007/s10773-014-2205-7

Cited by 22 publications

(4 citation statements)

References 18 publications

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“…Thus, the sender should confirm whether the channel is secure before he encodes his message on the quantum states because the message cannot be discarded, unlike that in QKD protocols. Many QSDC protocols have been proposed, including the protocols without using entanglement 17 18 19 , the protocols using entanglement 20 21 22 23 24 25 26 27 and the two-way QSDC protocols 28 29 30 31 32 33 34 35 36 37 . The QSDC protocol can also be used in some special environments as first proposed by Boström et al .…”

mentioning

confidence: 99%

One Step Quantum Key Distribution Based on EPR Entanglement

et al. 2016

Sci Rep

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A novel quantum key distribution protocol is presented, based on entanglement and dense coding and allowing asymptotically secure key distribution. Considering the storage time limit of quantum bits, a grouping quantum key distribution protocol is proposed, which overcomes the vulnerability of first protocol and improves the maneuverability. Moreover, a security analysis is given and a simple type of eavesdropper’s attack would introduce at least an error rate of 46.875%. Compared with the “Ping-pong” protocol involving two steps, the proposed protocol does not need to store the qubit and only involves one step.

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confidence: 99%

One Step Quantum Key Distribution Based on EPR Entanglement

et al. 2016

Sci Rep

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“…Since Alice and Bob will directly transfer effective information in the channel, the safety requirements of the protocol are higher than QKD. 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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“…A quantum secret communication concept has recently been introduced; it is a kind of quantum communication in which secret messages can be transmitted through a quantum channel with or without additional classical communications 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 . A quantum secure direct communication ( QSDC ) transmits the secret messages directly between the communicating parties, from sender to receiver, without additional classical communication protocols, except for those used for the necessary eavesdropping check.…”

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confidence: 99%

“…In other words, the quantum key distribution ( QKD ) process and the classical communication of ciphertext are reduced into one single quantum communication procedure in QSDC . In QSDC , the concept of direct transmission of secret messages involves two kinds of meaning: On one hand, secret messages rather than raw keys are transmitted; on the other hand, the receiver does not require any separate classical communication from the sender to decode out secret messages 26 31 32 39 40 41 42 43 44 45 46 47 48 49 50 51 52 57 59 . In 2002, Long and Liu 52 put forward the first QSDC protocol, in which the secret message is transmitted directly.…”

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confidence: 99%

A generalized architecture of quantum secure direct communication for N disjointed users with authentication

Farouk

Zakaria

Megahed

et al. 2015

Sci Rep

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In this paper, we generalize a secured direct communication process between N users with partial and full cooperation of quantum server. So, N − 1 disjointed users u1, u2, …, uN−1 can transmit a secret message of classical bits to a remote user uN by utilizing the property of dense coding and Pauli unitary transformations. The authentication process between the quantum server and the users are validated by EPR entangled pair and CNOT gate. Afterwards, the remained EPR will generate shared GHZ states which are used for directly transmitting the secret message. The partial cooperation process indicates that N − 1 users can transmit a secret message directly to a remote user uN through a quantum channel. Furthermore, N − 1 users and a remote user uN can communicate without an established quantum channel among them by a full cooperation process. The security analysis of authentication and communication processes against many types of attacks proved that the attacker cannot gain any information during intercepting either authentication or communication processes. Hence, the security of transmitted message among N users is ensured as the attacker introduces an error probability irrespective of the sequence of measurement.

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Quantum Secure Direct Communication Achieved by Using Multi-Entanglement

Cited by 22 publications

References 18 publications

One Step Quantum Key Distribution Based on EPR Entanglement

One Step Quantum Key Distribution Based on EPR Entanglement

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

A generalized architecture of quantum secure direct communication for N disjointed users with authentication

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