期刊文献+
共找到91篇文章
< 1 2 5 >
每页显示 20 50 100
Controlled Bidirectional Quantum Direct Communication by Using a GHZ State 被引量:20
1
作者 满忠晓 夏云杰 《Chinese Physics Letters》 SCIE CAS CSCD 2006年第7期1680-1682,共3页
A controlled bidirectional quantum secret direct communication scheme is proposed by using a Greenberger- Horne-Zeilinger (GHZ) state. In the scheme, two users can exchange their secret messages simultaneously with ... A controlled bidirectional quantum secret direct communication scheme is proposed by using a Greenberger- Horne-Zeilinger (GHZ) state. In the scheme, two users can exchange their secret messages simultaneously with a set of devices under the control of a third party. The security of the scheme is analysed and confirmed. 展开更多
关键词 SECURE DIRECT communication WOJCIKS EAVESDROPPING ATTACK PING-PONGPROTOCOL ENTANGLEMENT CRYPTOGRAPHY SCHEME
下载PDF
Bidirectional Quantum Secure Direct Communication Network Protocol with Hyperentanglement 被引量:4
2
作者 顾斌 黄余政 +1 位作者 方夏 陈玉林 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第10期659-663,共5页
We propose a bidirectional quantum secure direct communication(QSDC) network protocol with the hyperentanglment in both the spatial-mode ad the polarization degrees of freedom of photon pairs which can in principle be... We propose a bidirectional quantum secure direct communication(QSDC) network protocol with the hyperentanglment in both the spatial-mode ad the polarization degrees of freedom of photon pairs which can in principle be produced with a beta barium borate crystal.The secret message can be encoded on the photon pairs with unitary operations in these two degrees of freedom independently.Compared with other QSDC network protocols,our QSDC network protocol has a higher capacity as each photon pair can carry 4 bits of information.Also,we discuss the security of our QSDC network protocol and its feasibility with current techniques. 展开更多
关键词 quantum secure direct communication NETWORK BIdirectional hyperentanglement high capacity
下载PDF
Revised quantum direct communication scheme with mutual authentication 被引量:2
3
作者 刘文杰 陈汉武 +1 位作者 许娟 刘志昊 《Journal of Southeast University(English Edition)》 EI CAS 2010年第4期532-536,共5页
Based on mutual authentication and dense coding,a novel revised efficient quantum direct communication scheme is proposed.It is composed of two phases:the quantum state distribution process and the direct communicati... Based on mutual authentication and dense coding,a novel revised efficient quantum direct communication scheme is proposed.It is composed of two phases:the quantum state distribution process and the direct communication process.The purpose of the former is to authenticate Trent and users to each other,and let the two legitimate users(Alice and Bob)safely share the Bell states.While the latter aims to make direct communication to transmit a secret message between Alice and Bob.In order to prevent from Eve's eavesdropping as well as to authenticate each other simultaneously,a decoy photon checking technique is applied.Compared with other analogous protocols,the quantum state distribution process is more simple and feasible and the proposed scheme is more efficient;i.e.,the total efficiency is almost 100%.Security analysis shows that the proposed scheme is secure against the eavesdropping attacks,the impersonation attacks,and some special Trent's attacks,including the attacks by using different initial states. 展开更多
关键词 quantum direct communication mutual authentica-tion decoy-photon checking impersonation attack special Trent's attack
下载PDF
Dynamic Event-Triggered Consensus Control for Input Constrained Multi-Agent Systems With a Designable Minimum Inter-Event Time
4
作者 Meilin Li Yue Long +2 位作者 Tieshan Li Hongjing Liang C.L.Philip Chen 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2024年第3期649-660,共12页
This paper investigates the consensus control of multi-agent systems(MASs) with constrained input using the dynamic event-triggered mechanism(ETM).Consider the MASs with small-scale networks where a centralized dynami... This paper investigates the consensus control of multi-agent systems(MASs) with constrained input using the dynamic event-triggered mechanism(ETM).Consider the MASs with small-scale networks where a centralized dynamic ETM with global information of the MASs is first designed.Then,a distributed dynamic ETM which only uses local information is developed for the MASs with large-scale networks.It is shown that the semi-global consensus of the MASs can be achieved by the designed bounded control protocol where the Zeno phenomenon is eliminated by a designable minimum inter-event time.In addition,it is easier to find a trade-off between the convergence rate and the minimum inter-event time by an adjustable parameter.Furthermore,the results are extended to regional consensus of the MASs with the bounded control protocol.Numerical simulations show the effectiveness of the proposed approach. 展开更多
关键词 Constrained input designable minimum inter-event time directed communication topology dynamic event-triggered mechanism MASs consensus control
下载PDF
Quantum secure direct communication with quantum encryption based on pure entangled states 被引量:42
5
作者 李熙涵 李春燕 +3 位作者 邓富国 周萍 梁玉洁 周宏余 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第8期2149-2153,共5页
This paper presents a scheme for quantum secure direct communication with quantum encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs (quantum key) shared for encrypting and de... This paper presents a scheme for quantum secure direct communication with quantum encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs (quantum key) shared for encrypting and decrypting the secret message carried by the travelling photons directly. For checking eavesdropping, the two parties perform the single-photon measurements on some decoy particles before each round. This scheme has the advantage that the pure entangled quantum signal source is feasible at present and any eavesdropper cannot steal the message. 展开更多
关键词 quantum secure direct communication quantum encryption quantum key pure entangled states
下载PDF
A two-step quantum secure direct communication protocol with hyperentanglement 被引量:18
6
作者 顾斌 黄余改 +1 位作者 方夏 张成义 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第10期66-70,共5页
We propose a two-step quantum secure direct communication (QSDC) protocol with hyperentanglement in both the spatial-mode and the polarization degrees of freedom of photon pairs which can in principle be produced wi... We propose a two-step quantum secure direct communication (QSDC) protocol with hyperentanglement in both the spatial-mode and the polarization degrees of freedom of photon pairs which can in principle be produced with a beta barium borate crystal. The secret message can be encoded on the photon pairs with unitary operations in these two degrees of freedom independently. This QSDC protocol has a higher capacity than the original two-step QSDC protocol as each photon pair can carry 4 bits of information. Compared with the QSDC protocol based on hyperdense coding, this QSDC protocol has the immunity to Trojan horse attack strategies with the process for determining the number of the photons in each quantum signal as it is a one-way quantum communication protocol. 展开更多
关键词 quantum secure direct communication TWO-STEP hyperentanglement high capacity
下载PDF
Fault tolerant quantum secure direct communication with quantum encryption against collective noise 被引量:9
7
作者 黄伟 温巧燕 +2 位作者 贾恒越 秦素娟 高飞 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第10期101-109,共9页
We present two novel quantum secure direct communication(QSDC) protocols over different collective-noise channels.Different from the previous QSDC schemes over collective-noise channels,which are all source-encrypti... We present two novel quantum secure direct communication(QSDC) protocols over different collective-noise channels.Different from the previous QSDC schemes over collective-noise channels,which are all source-encrypting protocols,our two protocols are based on channel-encryption.In both schemes,two authorized users first share a sequence of EPR pairs as their reusable quantum key.Then they use their quantum key to encrypt and decrypt the secret message carried by the decoherence-free states over the collective-noise channel.In theory,the intrinsic efficiencies of both protocols are high since there is no need to consume any entangled states including both the quantum key and the information carriers except the ones used for eavesdropping checks.For checking eavesdropping,the two parties only need to perform two-particle measurements on the decoy states during each round.Finally,we make a security analysis of our two protocols and demonstrate that they are secure. 展开更多
关键词 quantum cryptography quantum secure direct communication quantum encryption collective noise
下载PDF
Economical quantum secure direct communication network with single photons 被引量:10
8
作者 邓富国 李熙涵 +2 位作者 李春燕 周萍 周宏余 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第12期3553-3559,共7页
In this paper a scheme for quantum secure direct communication (QSDC) network is proposed with a sequence of polarized single photons. The single photons are prepared originally in the same state (0) by the server... In this paper a scheme for quantum secure direct communication (QSDC) network is proposed with a sequence of polarized single photons. The single photons are prepared originally in the same state (0) by the servers on the network, which will reduce the difficulty for the legitimate users to check eavesdropping largely. The users code the information on the single photons with two unitary operations which do not change their measuring bases. Some decoy photons, which are produced by operating the sample photons with a Hadamard, are used for preventing a potentially dishonest server from eavesdropping the quantum lines freely. This scheme is an economical one as it is the easiest way for QSDC network communication securely. 展开更多
关键词 quantum secure direct communication NETWORK single photons
下载PDF
An efficient quantum secure direct communication scheme with authentication 被引量:7
9
作者 杨宇光 温巧燕 朱甫臣 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第7期1838-1842,共5页
In this paper an efficient quantum secure direct communication (QSDC) scheme with authentication is presented, which is based on quantum entanglement and polarized single photons. The present protocol uses Einstein-... In this paper an efficient quantum secure direct communication (QSDC) scheme with authentication is presented, which is based on quantum entanglement and polarized single photons. The present protocol uses Einstein-Podolsky-Rosen (EPR) pairs and polarized single photons in batches. A particle of the EPR pairs is retained in the sender's station, and the other is transmitted forth and back between the sender and the receiver, similar to the‘ping-pong' QSDC protocol. According to the shared information beforehand, these two kinds of quantum states are mixed and then transmitted via a quantum channel. The EPR pairs are used to transmit secret messages and the polarized single photons used for authentication and eavesdropping check. Consequently, because of the dual contributions of the polarized single photons, no classical information is needed. The intrinsic efficiency and total efficiency are both 1 in this scheme as almost all of the instances are useful and each EPR pair can be used to carry two bits of information. 展开更多
关键词 quantum key distribution quantum authentication quantum secure direct communication non-orthogonal
下载PDF
Quantum Secure Direct Communication by Using Three-Dimensional Hyperentanglement 被引量:8
10
作者 施锦 龚彦晓 +2 位作者 徐平 祝世宁 詹佑邦 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第11期831-836,共6页
We propose two schemes for realizing quantum secure direct communication (QSDC)by using a set ofordered two-photon three-dimensional hyperentangled states entangled in two degrees of freedom (DOFs)as quantuminformatio... We propose two schemes for realizing quantum secure direct communication (QSDC)by using a set ofordered two-photon three-dimensional hyperentangled states entangled in two degrees of freedom (DOFs)as quantuminformation channels.In the first scheme,the photons from Bob to Alice are transmitted only once.After insuring thesecurity of the quantum channels,Bob encodes the secret message on his photons.Then Alice performs single-photontwo-DOF Bell bases measurements on her photons.This scheme has better security than former QSDC protocols.In thesecond scheme,Bob transmits photons to Alice twice.After insuring the security of the quantum channels,Bob encodesthe secret message on his photons.Then Alice performs two-photon Bell bases measurements on each DOF.The schemehas more information capacity than former QSDC protocols. 展开更多
关键词 quantum secure direct communication hyperentanglement Bell bases measurement
下载PDF
Distributed Secondary Control of AC Microgrids With External Disturbances and Directed Communication Topologies:A Full-Order Sliding-Mode Approach 被引量:6
11
作者 Boda Ning Qing-Long Han Lei Ding 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2021年第3期554-564,共11页
This paper addresses the problem of distributed secondary control for islanded AC microgrids with external disturbances.By using a full-order sliding-mode(FOSM)approach,voltage regulation and frequency restoration are... This paper addresses the problem of distributed secondary control for islanded AC microgrids with external disturbances.By using a full-order sliding-mode(FOSM)approach,voltage regulation and frequency restoration are achieved in finite time.For voltage regulation,a distributed observer is proposed for each distributed generator(DG)to estimate a reference voltage level.Different from some conventional observers,the reference voltage level in this paper is accurately estimated under directed communication topologies.Based on the observer,a new nonlinear controller is designed in a backstepping manner such that an FOSM surface is reached in finite time.On the surface,the voltages of DGs are regulated to the reference level in finite time.For frequency restoration,a distributed controller is further proposed such that a constructed FOSM surface is reached in finite time,on which the frequencies of DGs are restored to a reference level in finite time under directed communication topologies.Finally,case studies on a modified IEEE 37-bus test system are conducted to demonstrate the effectiveness,the robustness against load changes,and the plug-and-play capability of the proposed controllers. 展开更多
关键词 Directed communication topologies distributed secondary control external disturbances full-order sliding-mode control MICROGRIDS
下载PDF
Controlled Secure Direct Communication Protocol via the Three-Qubit Partially Entangled Set of States 被引量:7
12
作者 Gang Xu Ke Xiao +2 位作者 Zongpeng Li Xin-Xin Niu Michael Ryan 《Computers, Materials & Continua》 SCIE EI 2019年第3期809-827,共19页
In this paper,we first re-examine the previous protocol of controlled quantum secure direct communication of Zhang et al.’s scheme,which was found insecure under two kinds of attacks,fake entangled particles attack a... In this paper,we first re-examine the previous protocol of controlled quantum secure direct communication of Zhang et al.’s scheme,which was found insecure under two kinds of attacks,fake entangled particles attack and disentanglement attack.Then,by changing the party of the preparation of cluster states and using unitary operations,we present an improved protocol which can avoid these two kinds of attacks.Moreover,the protocol is proposed using the three-qubit partially entangled set of states.It is more efficient by only using three particles rather than four or even more to transmit one bit secret information.Given our using state is much easier to prepare for multiqubit states and our protocol needs less measurement resource,it makes this protocol more convenient from an applied point of view. 展开更多
关键词 Controlled secure direct communication cluster state three-qubit partially entangled state entanglement swapping.
下载PDF
Quantum Secure Direct Communication Using W State 被引量:5
13
作者 DONG Li XIU Xiao-Ming GAO Ya-Jun CHI Feng 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第6期1495-1498,共4页
A theoretical scheme of quantum secure direct communication using teleportation is proposed. In the scheme, the sender needs to prepare a class of three-particle W states to use as quantum channel. The two communicato... A theoretical scheme of quantum secure direct communication using teleportation is proposed. In the scheme, the sender needs to prepare a class of three-particle W states to use as quantum channel. The two communicators may communicate after they test the security of the quantum channel. The security of the protocol is ensured by quantum entanglement and quantum no-cloning theorem. The receiver can obtain the secret message determinately if the quantum channel is secure. 展开更多
关键词 quantum information quantum secret direct communication W state
下载PDF
Quantum Secure Direct Communication and Quantum Sealed-Bid Auction with EPR Pairs 被引量:4
14
作者 王章银 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第12期997-1002,共6页
I present a new protocol for three-party quantum secure direct communication (QSDC) with a set of ordered M Einstein-Podolsky-Rosen (EPR) pairs. In the scheme, by performing two unitary operations and Bell state m... I present a new protocol for three-party quantum secure direct communication (QSDC) with a set of ordered M Einstein-Podolsky-Rosen (EPR) pairs. In the scheme, by performing two unitary operations and Bell state measurements, it is shown that the three legitimate parties can exchange their respective secret message simultaneously. Then I modify it for an experimentally feasible and secure quantum sealed-bid auction (QSBD) protocol. Furthermore, I also analyze th^ecurity of the protocol, and the scheme is proven to be secure against the intercept-and-resend attack, the disturbancb attack and the entangled-and-measure attack. 展开更多
关键词 Einstein-Podolsky-Rosen (EPR) pairs quantum secure direct communication quantum sealedbid auction Bell state measurement unitary operation
下载PDF
Measurement-device-independent one-step quantum secure direct communication 被引量:4
15
作者 Jia-Wei Ying Lan Zhou +1 位作者 Wei Zhong Yu-Bo Sheng 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第12期57-65,共9页
The one-step quantum secure direct communication(QSDC)(Sci.Bull.67,367(2022))can effectively simplify QSDC’s operation and reduce message loss.For enhancing its security under practical experimental condition,we prop... The one-step quantum secure direct communication(QSDC)(Sci.Bull.67,367(2022))can effectively simplify QSDC’s operation and reduce message loss.For enhancing its security under practical experimental condition,we propose two measurement-device-independent(MDI)one-step QSDC protocols,which can resist all possible attacks from imperfect measurement devices.In both protocols,the communication parties prepare identical polarization-spatial-mode two-photon hyperentangled states and construct the hyperentanglement channel by hyperentanglement swapping.The first MDI one-step QSDC protocol adopts the nonlinear-optical complete hyperentanglement Bell state measurement(HBSM)to construct the hyperentanglement channel,while the second protocol adopts the linear-optical partial HBSM.Then,the parties encode the photons in the polarization degree of freedom and send them to the third party for the hyperentanglementassisted complete polarization Bell state measurement.Both protocols are unconditionally secure in theory.The simulation results show the MDI one-step QSDC protocol with complete HBSM attains the maximal communication distance of about354 km.Our MDI one-step QSDC protocols may have potential applications in the future quantum secure communication field. 展开更多
关键词 measurement-device-independent one-step quantum secure direct communication hyperentanglement Bell state measurement hyperentanglement-assisted complete polarization Bell state measurement
下载PDF
Improvement on Quantum Secure Direct Communication with W State in Noisy Channel 被引量:4
16
作者 DONG Li XIU Xiao-Ming GAO Ya-Jun CHI Feng 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第2期232-234,共3页
An improvement (Y-protocol) [Commun. Theor. Phys. 49 (2008) 103] on the quantum secure direct communication with W state (C-protocol) [Chin. Phys. Lett. 23 (2006) 290] is proposed by Yuan et al. The quantum bi... An improvement (Y-protocol) [Commun. Theor. Phys. 49 (2008) 103] on the quantum secure direct communication with W state (C-protocol) [Chin. Phys. Lett. 23 (2006) 290] is proposed by Yuan et al. The quantum bit error rate induced by eavesdropper is 4.17% in C-protocol and 6.25% in Y-protocoL In this paper, another improvement on C-protocol is given. The quantum bit error rate of the eavesdropping will increase to 8.75%, which is 1.1 times larger than that in C-protocol and 0.4 times larger than that in Y-protocol. 展开更多
关键词 quantum cryptography quantum secure direct communication W state
下载PDF
Eavesdropping on Quantum Secure Direct Communication with W State in Noisy Channel 被引量:3
17
作者 YUAN Hao LIU Yin-Min +1 位作者 ZHANG Wen ZHANG Zhan-Jun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第1期103-106,共4页
Security of the quantum secure direct communication protocol (i.e., the C-S QSDC protocol) recently proposed by Cao and Song [Chin. Phys. Lett. 23 (2006) 290] is analyzed in the case of considerable quantum channe... Security of the quantum secure direct communication protocol (i.e., the C-S QSDC protocol) recently proposed by Cao and Song [Chin. Phys. Lett. 23 (2006) 290] is analyzed in the case of considerable quantum channel noise. The eavesdropping scheme is presented, which reveals that the C-S QSDC protocol is not secure if the quantum bit error rate (QBER) caused by quantum channel noise is higher than 4.17%. Our eavesdropping scheme induces about 4.17% QBER for those check qubits. However, such QBER can be hidden in the counterpart induced by the noisy quantum channel if the eavesdropper Eve replaces the original noisy channel by an ideal one. Furthermore, if the QBER induced by quantum channel noise is lower than 4.17%, then in the eavesdropping scheme Eve still can eavesdrop part of the secret messages by safely attacking a fraction of the transmitted qubits. Finally, an improvement on the C-S QSDC protocol is put forward. 展开更多
关键词 EAVESDROPPING quantum secure direct communication quantum bit error rate noise
下载PDF
Analysis and Improvement of an Efficient Controlled Quantum Secure Direct Communication and Authentication Protocol 被引量:3
18
作者 Jifeng Zhong Zhihao Liu Juan Xu 《Computers, Materials & Continua》 SCIE EI 2018年第12期621-633,共13页
The controlled quantum secure direct communication(CQSDC)with authentication protocol based on four particle cluster states via quantum one-time pad and local unitary operations is cryptanalyzed.It is found that there... The controlled quantum secure direct communication(CQSDC)with authentication protocol based on four particle cluster states via quantum one-time pad and local unitary operations is cryptanalyzed.It is found that there are some serious security issues in this protocol.An eavesdropper(Eve)can eavesdrop on some information of the identity strings of the receiver and the controller without being detected by the selective-CNOT-operation(SCNO)attack.By the same attack,Eve can also steal some information of the secret message that the sender transmits.In addition,the receiver can take the same kind of attack to eavesdrop on some information of the secret message out of the control of the controller.This means that the requirements of CQSDC are not satisfied.At last,we improve the original CQSDC protocol to a secure one. 展开更多
关键词 Quantum cryptography controlled quantum secure direct communication selective-CNOT-operation attack
下载PDF
Robust Quantum Secure Direct Communication and Deterministic Secure Quantum Communication over Collective Dephasing Noisy Channel 被引量:2
19
作者 YUAN Hao SONG Jun +4 位作者 HE Qin HAN Lian-Fang HOU Kui HU Xiao-Yuan SHI Shou-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第9期627-632,共6页
We propose two schemes for quantum secure direct communication (QSDC) and deterministic securequantum communication (DSQC) over collective dephasing noisy channel.In our schemes,four special two-qubit statesare used a... We propose two schemes for quantum secure direct communication (QSDC) and deterministic securequantum communication (DSQC) over collective dephasing noisy channel.In our schemes,four special two-qubit statesare used as the quantum channel.Since these states are unchanged through the collective dephasing noisy channel,the effect of the channel noise can be perfectly overcome.Simultaneously,the security against some usual attacks canbe ensured by utilizing the various checking procedures.Furthermore,these two schemes are feasible with present-daytechnique. 展开更多
关键词 quantum secure direct communication deterministic secure quantum communication collective dephasing noisy channel special two-qubit states
下载PDF
Faithful quantum secure direct communication protocol against collective noise 被引量:3
20
作者 杨静 王川 张茹 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第11期78-83,共6页
An improved quantum secure direct communication (QSDC) protocol is proposed in this paper. Blocks of entangled photon pairs are transmitted in two steps in which secret messages are transmitted directly. The single ... An improved quantum secure direct communication (QSDC) protocol is proposed in this paper. Blocks of entangled photon pairs are transmitted in two steps in which secret messages are transmitted directly. The single logical qubits and unitary operations under decoherence free subspaces are presented and the generalized Bell states are constructed which are immune to the collective noise. Two steps of qubit transmission are used in this protocol to guarantee the security of communication. The security of the protocol against various attacks are discussed. 展开更多
关键词 quantum secure direct communication collective noise
下载PDF
上一页 1 2 5 下一页 到第
使用帮助 返回顶部