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Logic Bell state concentration with parity check measurement

Frontiers of physics 2019年第2期14卷 1-11页

作者： Jiu Liu Lan Zhou Wei Zhong Yu-Bo Sheng Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology (Ministry of Education) Nanjing University of Posts and TelecommunicationsNanjing 210003China

Logic qubit plays an important role in current quantum communication. In this paper, we propose an efficient entanglement concentration protocol (ECP) for a new kind of logic Bell state, where the logic qubit is the concatenated Greenber- Horne- Zeilinger (C-GHZ) state. Our ECP relies on the nondemolition polarization parity check (PPC) gates constructed with cross-Kerr nonlinearity, and can distill one pair of maximally entangled logic Bell state from two same pairs of less-entangled logic Bell states. Benefit from the nondemolition PPC gates, the concentrated maximally entangled logic Bell st ate can be remained for further application. Moreover, our ECP can be rcpea ted to further concentrate the less-entangled logic Bell state. By repeating the ECP. the total success probability can be effectively increased. Based on above features, this ECP may be useful in future long-distance quantum communication.

关键词： concatenated Greenber-Horne-Zeilinger (C-GHZ) state single photon cross-Kerr nonlinearity

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A Novel Shilling Attack Detection Model Based on Particle Filter and Gravitation

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China communications 2019年第10期16卷 112-132页

作者： Lingtao Qi Haiping Huang Feng Li Reza Malekian Ruchuan Wang College of Computer Nanjing University of Posts and TelecommunicationsNanjing 210003China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing 210003China “Broadband Wireless Communication and Sensor Network Technology”Key Lab of Ministry of Education NUPTNanjing 210003China College of Computer Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Computer Science and Media Technology Malmo UniversityMalmo 20506Sweden

With the rapid development of e-commerce, the security issues of collaborative filtering recommender systems have been widely investigated. Malicious users can benefit from injecting a great quantities of fake profiles into recommender systems to manipulate recommendation results. As one of the most important attack methods in recommender systems, the shilling attack has been paid considerable attention, especially to its model and the way to detect it. Among them, the loose version of Group Shilling Attack Generation Algorithm (GSAGenl) has outstanding performance. It can be immune to some PCC (Pearson Correlation Coefficient)-based detectors due to the nature of anti-Pearson correlation. In order to overcome the vulnerabilities caused by GSAGenl, a gravitation-based detection model (GBDM) is presented, integrated with a sophisticated gravitational detector and a decider. And meanwhile two new basic attributes and a particle filter algorithm are used for tracking prediction. And then, whether an attack occurs can be judged according to the law of universal gravitation in decision-making. The detection performances of GBDM, HHT-SVM, UnRAP, AP-UnRAP Semi-SAD,SVM-TIA and PCA-P are compared and evaluated. And simulation results show the effectiveness and availability of GBDM.

关键词： shilling attack detection model collaborative filtering recommender systems gravitation-based detection model particle filter algorithm

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Optimization on Cooperative communications Based on network Coding in Multi-hop Wireless networks

Optimization on Cooperative Communications Based on Network ...

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International Wireless communications and Mobile Computing Conference, IWCMC

作者： Xiande Bu Chuan Liu Qiang Yu Lei Yin Feng Tian State Grid Laboratory of Electric Power Communication Network Global Energy Interconnection Research Institute Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing Universityof Posts and Telecommunications) Ministry of Education Nanjing China

ISBN: (数字)9781728131290

ISBN: (纸本)9781728131306

Cooperative communications (CC) based on network coding (NC) can significantly increase the capacity of wireless networks. In this paper, we investigate how to apply NC in multi-hop wireless networks with multiple relay nodes and multiple sessions to achieve more practical and general CC based on NC. Based on NC, we consider to jointly optimize relay node selecting, scheduling and flow routing in CC in a multi-hop wireless network. We not only construct a mathematical model but also formulate a maximum-minimum (Max-Min) optimization problem for it. Then we reformulate and solve it with CPLEX. Through simulation, we validate that the achieved rate gain by NC can be greatly improved than the one by CC.

关键词： Relays Spread spectrum communication Wireless networks Routing Optimization Mathematical model network coding

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Measurement-device-independent quantum secure direct communication

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Science China(Physics,Mechanics & Astronomy) 2020年第3期63卷 2-7页

作者： ZengRong Zhou Yu Bo Sheng PengHao Niu LiuGuo Yin GuiLu Long Lajos Hanzo State Key Laboratory of Low-dimensional Quantum Physics Beijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Collaborative Innovation Center of Quantum Matter Beijing 100084China Beijing Academy of Quantum Information Beijing 100084China Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China College of Telecommunications&Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China Beijing National Research Center for Information Science and Technology Beijing 100084China School of Information and Technology Tsinghua UniversityBeijing 100084China School of Electronics and Computer Science University of SouthamptonSouthampton SO171BJUK

Quantum secure direct communication(QSDC)is a unique technique,which supports the secure transmission of confidential information directly through a quantum channel without the need for a secret key and for *** this secure communication protocol fundamentally differs from its conventional *** this article,we report the first measurement-deviceindependent(MDI)QSDC protocol relying on sequences of entangled photon pairs and single ***,it eliminates the security loopholes associated with the measurement ***,this MDI technique is capable of doubling the communication distance of its conventional counterpart operating without using our MDI *** also conceive a protocol associated with linear optical Bell-basis measurements,where only two of the four Bell-basis states could be *** the number of qubits in a sequence reduces to 1,the MDI-QSDC protocol degenerates to a deterministic MDI quantum key distribution protocol.

关键词： quantum information secure communication quantum communication

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Energy Efficiency Optimization in Heterogeneous networks Based on Deep Reinforcement Learning

Energy Efficiency Optimization in Heterogeneous Networks Bas...

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IEEE International Conference on communications Workshops, ICC

作者： Daoping Shi Feng Tian Shengchen Wu Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing Universityof Posts and Telecommunications) Ministry of Education Nanjing China Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (数字)9781728174402

ISBN: (纸本)9781728174419

To meet the rapid increasing requirement of service and application of communication, heterogeneous wireless networks with the macrocell and the femtocells are considered in this paper. How to deal with resource allocation efficiently and dynamically in heterogeneous wireless networks puts forward to an urgent problem. In this paper, we aim to maximize the overall network's energy efficiency, where multiple femto base stations are randomly and densely distributed in the coverage of macro base station. We first construct an EE model and formulate the problem for optimization. Then we propose a Nature DQN algorithm in deep reinforcement learning to solve it with power discretization. Finally, in simulations, it demonstrates that the proposed Nature DQN can not only achieve better energy efficiency than Q-learning and water-filling but also accelerate the convergence.

关键词： Optimization Resource management Macrocell networks Wireless networks Machine learning Femtocells Interference

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A Survey of Trusted network Trust Evaluation Methods 2nd

A Survey of Trusted Network Trust Evaluation Methods

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2nd EAI International Conference on Security and Privacy in New Computing Environments, SPNCE 2019

作者： Yin, An-Sheng Zhang, Shun-Yi Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing210023 China Department of Internet of Things Nanjing University of Posts and Telecommunications Nanjing210023 China

ISBN: (纸本)9783030213725

The proposed trusted network is respond to the increasingly prominent internal network security threats. At present, research on trusted networks focuses on two aspects: pre-network access check and dynamic evaluation after access. The pre-access check considers the integrity of the terminal and uses encryption and authentication methods to achieve it. The dynamic evaluation uses the static and dynamic attributes of the trust to implement trust evaluation. © 2019, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.

关键词： network security

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Device-independent quantum secure direct communication against collective attacks

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Science Bulletin 2020年第1期65卷 12-20,M0003页

作者： Lan Zhou Yu-Bo Sheng Gui-Lu Long School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China State Key Laboratory of Low-dimensional Quantum Physics Beijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China

"Device-independent"not only represents a relaxation of the security assumptions about the internal working of the quantum devices,but also can enhance the security of the quantum *** the paper,we put forward the first device-independent quantum secure direct communication(DIQSDC)protocol and analyze its security and communication efficiency against collective *** practical noisy quantum channel condition,the photon transmission loss and photon state decoherence would reduce DI-QSDC’s communication quality and threaten its absolute *** solving the photon transmission loss and decoherence problems,we adopt noiseless linear amplification(NLA)protocol and entanglement purification protocol(EPP)to modify the DI-QSDC *** the help of the NLA and EPP,we can guarantee DI-QSDC’s absolute security and effectively improve its communication quality.

关键词： Quantum cryptography Device-independent quantum secure direct communication Information security communication efficiency

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Logic W-state concentration with parity check

Quantum Engineering

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Quantum Engineering 2021年第2期3卷

作者： Zhou, Lan Liu, Jiu Liu, Ze-Kai Zhong, Wei Sheng, Yu-Bo School of Science Nanjing University of Posts and Telecommunications Nanjing China Institute of Signal Processing Transmission Nanjing University of Posts and Telecommunications Nanjing China College of Telecommunications & Information Engineering Nanjing University of Posts and Telecommunications Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing China

Logic W state, which replaces each physical qubit in a W state with a Greenberger–Horne–Zeilinger state is robust against photon transmission loss in long-distance quantum communication. In practical application, the environmental noise may make maximally entangled logic W state degrade to less entangled state, which largely limits its application. In this article, we propose an efficient entanglement concentration protocol (ECP) for logic W state, which can recover the less entangled logic W state into the maximally entangled logic W state. Our ECP relies on the nondemolition polarization parity check (PPC) gate constructed with cross-Kerr nonlinearity. The distilled maximally entangled logic W state can be preserved for other application. Moreover, when the ECP fails, we can repeat the ECP to further concentrate the distilled less entangled logic W state. By repeating the ECP, the total success probability can be effectively increased. Based on above features, this ECP may be useful in quantum communication field. © 2021 John Wiley & Sons, Ltd.

关键词： Polarization

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Accurate and fast DV-hop localization algorithm in irregular networks 5th

Accurate and fast DV-hop localization algorithm in irregular...

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5th International Conference on Artificial Intelligence and Security, ICAIS 2019

作者： Yan, Xiaoyong Feng, Xiang Sun, Zhixin Broadband Wireless Communication and Sensor Network Technology Key Lab of Ministry of Education Nanjing University of Posts and Telecommunications Nanjing210003 China YuanTong Express Co. LTD. Shanghai201705 China

ISBN: (纸本)9783030242701

The DV-hop localization algorithm does not depend on any measurement hardware, which only uses hop-counts to describe the Euclidean distance between nodes, it will not generate any additional burden, and thus this lightweight localization algorithm is economical and effective. Unfortunately, nodes generally have irregular distribution in reality, which tends to make deviations during the conversion between hop-counts and Euclidean distance, and as a result, the final estimated locations of nodes tend to deviate from the right location. Therefore, we analyzed the error during the hop-counts and Euclidean distance conversion, derived that the variance of error is related to hop-counts, and used the weighted least square method to correct the deviation. On this basis, we also limit the estimation location range of normal nodes according to the distances relationship between the estimated distances of normal nodes to anchor nodes and the distances of normal nodes estimated location to anchor nodes. Both the theoretical analysis and experimental results show that the proposed algorithm has not only maintained the economic characteristics of DV-hop localization, but also has the high localization accuracy and it can be adapted to various networks with different deployment of nodes. © Springer Nature Switzerland AG 2019.

关键词： Location

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The Phase Sensitivities for Different Phase-Shift Configurations in an SU(1,1) Interferometer

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communications in Theoretical Physics 2019年第12期71卷 1435-1442页

作者： Fan Wang Wei Zhong Lan Zhou Yu-Bo Sheng Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsMinistry of EducationNanjing 210003China

We theoretically study the phase sensitivities of two different phase-shift configurations in an SU(1,1)interferometer with coherent■squeezed vacuum *** to quantum Cramér-Rao theorem,we analytically obtain the ultimate phase sensitivities for two types of phase shift accumulating in one-and *** with the case of one-arm phase shift,the model with phase shift encoding in both arms may provide a better sensitivity when the strength of squeezed vacuum state is large ***,we discuss the achievable sensitivities with the homodyne measurement by invoking of error-propagation *** addition,we study the effect of internal and outernal photon losses on the phase sensitivity of the SU(1,1)interferometer and find that the unbalanced interferometer is helpful to improve precision even with high external losses.

关键词： SU(1,1)interferometer quantum Fisher information one-and two-arm phase shifts Homodyne measurement

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