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Quantum multicast schemes of different quantum states via non-maximally entangled channels with multiparty involvement 被引量:2
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作者 Yan Yu Nan Zhao +1 位作者 Chang-Xing Pei Wei Li 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第9期101-106,共6页
Due to the unavoidable interaction between the quantum channel and its ambient environment,it is difficult to generate and maintain the maximally entanglement.Thus,the research on multiparty information transmission v... Due to the unavoidable interaction between the quantum channel and its ambient environment,it is difficult to generate and maintain the maximally entanglement.Thus,the research on multiparty information transmission via non-maximally entangled channels is of academic value and general application.Here,we utilize the non-maximally entangled channels to implement two multiparty remote state preparation schemes for transmitting different quantum information from one sender to two receivers synchronously.The first scheme is adopted to transmit two different four-qubit cluster-type entangled states to two receivers with a certain probability.In order to improve success probabilities of such multicast remote state preparation using non-maximally entangled channels,we put forward the second scheme,which deals with the situation that is a synchronous transfer of an arbitrary single-qubit state and an arbitrary two-qubit state from one sender to two receivers.In particular,its success probability can reach 100%in principle,and independent of the entanglement degree of the shared non-maximally entangled channel.Notably,in the second scheme,the auxiliary particle is not required. 展开更多
关键词 quantum multicast communications non-maximally entangled states remote state preparation
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A Practical Quantum Network Coding Protocol Based on Non-Maximally Entangled State 被引量:1
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作者 Zhen-Zhen Li Zi-Chen Li +3 位作者 Xiu-Bo Chen Zhiguo Qu Xiaojun Wang Haizhu Pan 《Computers, Materials & Continua》 SCIE EI 2021年第8期2651-2663,共13页
In many earlier works,perfect quantum state transmission over the butterfly network can be achieved via quantum network coding protocols with the assist of maximally entangled states.However,in actual quantum networks... In many earlier works,perfect quantum state transmission over the butterfly network can be achieved via quantum network coding protocols with the assist of maximally entangled states.However,in actual quantum networks,a maximally entangled state as auxiliary resource is hard to be obtained or easily turned into a non-maximally entangled state subject to all kinds of environmental noises.Therefore,we propose a more practical quantum network coding scheme with the assist of non-maximally entangled states.In this paper,a practical quantum network coding protocol over grail network is proposed,in which the non-maximally entangled resource is assisted and even the desired quantum state can be perfectly transmitted.The achievable rate region,security and practicability of the proposed protocol are discussed and analyzed.This practical quantum network coding protocol proposed over the grail network can be regarded as a useful attempt to help move the theory of quantum network coding towards practicability. 展开更多
关键词 Quantum network coding non-maximally entangled state quantum grail network practical protocol
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Probabilistic Teleportation of an Arbitrary Unknown Two-Qubit State via Positive Operator-Valued Measure and Two Non-maximally Entangled States 被引量:1
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作者 WANG Zhang-Yin WANG Dong LIU Jun SHI Shou-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第5X期859-862,共4页
We present a scheme for probabilistically teleporting an arbitrary unknown two-qubit state through a quantum channel made up of two nonidentical non-maximally entangled states. In this scheme, the probabilistic telepo... We present a scheme for probabilistically teleporting an arbitrary unknown two-qubit state through a quantum channel made up of two nonidentical non-maximally entangled states. In this scheme, the probabilistic teleportation is realized by using a proper positive operator-valued measure instead of usual projective measurement. 展开更多
关键词 positive operator-valued measure quantum teleportation non-maximally entangled state
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Probabilistic and Hierarchical Quantum Information Splitting Based on the Non-Maximally Entangled Cluster State
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作者 Gang Xu Rui-Ting Shan +2 位作者 Xiu-Bo Chen Mianxiong Dong Yu-Ling Chen 《Computers, Materials & Continua》 SCIE EI 2021年第10期339-349,共11页
With the emergence of classical communication security problems,quantum communication has been studied more extensively.In this paper,a novel probabilistic hierarchical quantum information splitting protocol is design... With the emergence of classical communication security problems,quantum communication has been studied more extensively.In this paper,a novel probabilistic hierarchical quantum information splitting protocol is designed by using a non-maximally entangled four-qubit cluster state.Firstly,the sender Alice splits and teleports an arbitrary one-qubit secret state invisibly to three remote agents Bob,Charlie,and David.One agent David is in high grade,the other two agents Bob and Charlie are in low grade.Secondly,the receiver in high grade needs the assistance of one agent in low grade,while the receiver in low grade needs the aid of all agents.While introducing an ancillary qubit,the receiver’s state can be inferred from the POVM measurement result of the ancillary qubit.Finally,with the help of other agents,the receiver can recover the secret state probabilistically by performing certain unitary operation on his own qubit.In addition,the security of the protocol under eavesdropping attacks is analyzed.In this proposed protocol,the agents need only single-qubit measurements to achieve probabilistic hierarchical quantum information splitting,which has appealing advantages in actual experiments.Such a probabilistic hierarchical quantum information splitting protocol hierarchical is expected to be more practical in multipartite quantum cryptography. 展开更多
关键词 Cluster state hierarchical quantum information splitting PROBABILISTIC non-maximally entangled states
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Cooperative Communications via Dual-Teleportation with Non-maximally Entanglement Measurements
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作者 毛云 郭迎 曾贵华 《Communications in Theoretical Physics》 SCIE CAS CSCD 2012年第5期780-788,共9页
We investigate a framework of the cooperative quantum teleportation (CQT) based on non-maximally entangled state basis (NB) measurements,instead of maximally entangled state basis (MB) measurements.It is implemented w... We investigate a framework of the cooperative quantum teleportation (CQT) based on non-maximally entangled state basis (NB) measurements,instead of maximally entangled state basis (MB) measurements.It is implemented with two consecutive conventional (or direct) quantum telportations (DQT),where unknown quantum states can be transmitted in a point-to-point fashion.The security is based on the quantum-mechanical impossibility of local unitary transformations between non-maximally entangled states.It shows that the CQT can enhance the successful transmissions by self-correcting the errors introduced in the dual-teleportations. 展开更多
关键词 quantum teleportation Bell states non-maximally entangled state quantum information
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YAU'S UNIFORMIZATION CONJECTURE FOR MANIFOLDS WITH NON-MAXIMAL VOLUME GROWTH 被引量:3
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作者 Binglong CHEN Xiping ZHU 《Acta Mathematica Scientia》 SCIE CSCD 2018年第5期1468-1484,共17页
The well-known Yau's uniformization conjecture states that any complete noncompact Kahler manifold with positive bisectional curvature is bi-holomorphic to the Euclidean space. The conjecture for the case of maximal ... The well-known Yau's uniformization conjecture states that any complete noncompact Kahler manifold with positive bisectional curvature is bi-holomorphic to the Euclidean space. The conjecture for the case of maximal volume growth has been recently confirmed, by G. Liu in [23]. In the first part, we will give a survey on thc progress. In the second part, we will consider Yau's conjecture for manifolds with non-maximal volume growth. We will show that the finiteness of the first Chern number Cn1 is an essential condition to solve Yau's conjecture by using algebraic embedding method. Moreover, we prove that, under bounded curvature conditions, Cn1 is automatically finite provided that there exists a positive line bundle with finite Chern number. In particular, we obtain a partial answer to Yau's uniformization conjecture on Kahler manifolds with minimal volume growth. 展开更多
关键词 uniformization conjecture non-maximal volume growth Chern number
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Controlled Secure Quantum Dialogue Using a Pure Entangled GHZ States 被引量:9
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作者 XIA Yan SONG Jie NIE Jing SONG He-Shan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第5X期841-846,共6页
We present a controlled secure quantum dialogue protocol using a non-maximally (pure) entangled Greenberger-Horne-Zeibinger (GHZ) states at first, and then discuss the requirements for a real quantum dialogue. We ... We present a controlled secure quantum dialogue protocol using a non-maximally (pure) entangled Greenberger-Horne-Zeibinger (GHZ) states at first, and then discuss the requirements for a real quantum dialogue. We show that the authorized two users can exchange their secret messages after purifying the non-maximally entangled GHZ states quantum channel unconditionally securely and simultaneously under the control of a third party. 展开更多
关键词 controlled secure quantum dialogue EAVESDROPPER non-maximally entangled GHZ state
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Probabilistic teleportation of a non-symmetric three-particle state 被引量:4
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作者 陈秀波 温巧燕 朱甫臣 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第10期2240-2245,共6页
This paper proposes a scheme for teleporting a kind of essential three-particle non-symmetric entangled state, which is much more valuable than a GHZ and W state for some applications in quantum information processing... This paper proposes a scheme for teleporting a kind of essential three-particle non-symmetric entangled state, which is much more valuable than a GHZ and W state for some applications in quantum information processing. In comparison with previous proposal of teleportation, the resources of entangled states as quantum channel and the number of classical messages required by our scheme can be cut down. Moreover, it is shown that there exists a class of transformations which ensure the success of this scheme, because the two-particle transformation performed by the receiver in the course of teleportation may be a generic two-particle operation instead of a control-NOT (CNOT) operation. In addition, all kinds of transformations performed by sender and receiver are given in detail. 展开更多
关键词 probabilistic teleportation three-particle entangled state non-maximally entangled state unitary transformation
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Universal quantum circuit evaluation on encrypted data using probabilistic quantum homomorphic encryption scheme 被引量:2
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作者 Jing-Wen Zhang Xiu-Bo Chen +1 位作者 Gang Xu Yi-Xian Yang 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第7期45-54,共10页
Homomorphic encryption has giant advantages in the protection of privacy information.In this paper,we present a new kind of probabilistic quantum homomorphic encryption scheme for the universal quantum circuit evaluat... Homomorphic encryption has giant advantages in the protection of privacy information.In this paper,we present a new kind of probabilistic quantum homomorphic encryption scheme for the universal quantum circuit evaluation.Firstly,the pre-shared non-maximally entangled states are utilized as auxiliary resources,which lower the requirements of the quantum channel,to correct the errors in non-Clifford gate evaluation.By using the set synthesized by Clifford gates and T gates,it is feasible to perform the arbitrary quantum computation on the encrypted data.Secondly,our scheme is different from the previous scheme described by the quantum homomorphic encryption algorithm.From the perspective of application,a two-party probabilistic quantum homomorphic encryption scheme is proposed.It is clear what the computation and operation that the client and the server need to perform respectively,as well as the permission to access the data.Finally,the security of probabilistic quantum homomorphic encryption scheme is analyzed in detail.It demonstrates that the scheme has favorable security in three aspects,including privacy data,evaluated data and encryption and decryption keys. 展开更多
关键词 quantum homomorphic encryption universal quantum circuit non-maximally entangled state SECURITY
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Multiparty Quantum Secret Sharing via Introducing Auxiliary Particles Using a Pure Entangled State 被引量:1
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作者 XIA Yan SONG Jie SONG He-Shan HUANG Xiao-Li HUANG Xiao-Li 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第6期1468-1472,共5页
We propose a new multiparty quantum secret sharing protocol via introducing auxiliary particles using a non-maximally entangled (pure) two-particle state without a Bell measurement. The communication parties utilize... We propose a new multiparty quantum secret sharing protocol via introducing auxiliary particles using a non-maximally entangled (pure) two-particle state without a Bell measurement. The communication parties utilize decoy particles tO check eavesdropping. After ensuring the security of the quantum channel, the sender encodes the secret message and transmits it to the receiver by using controlled-NOT operation and von Neumann measurement. If and only if all the agents agree to collaborate, they can read out the secret message. 展开更多
关键词 multiparty quantum secret sharing auxiliary particle controlled-NOT operation non-maximally entangled two-particle state
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Controlled Secure Quantum Communication Using Pure Entangled W Class States
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作者 XIA Yan SONG Jie SONG He-Shan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第4期919-924,共6页
We present a controlled secure quantum communication protocol using non-maximally (pure) entangled W states first, and then discuss the basic requirements for a real quantum communication. We show that the authorize... We present a controlled secure quantum communication protocol using non-maximally (pure) entangled W states first, and then discuss the basic requirements for a real quantum communication. We show that the authorized two users can exchange their secret messages with the help of the controller after purifying the non-maximally entangled states quantum channel unconditionally securely and simultaneously. Our quantum communication protocol seems even more feasible within present technologies. 展开更多
关键词 controlled secure quantum communication EAVESDROPPER non-maximally entangled W state
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A generalized tripartite scheme for splitting an arbitrary 2-qubit state with three 2-qubit partially entangled states and the Kraus measurement
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作者 XU ChunJie LIU YiMin +1 位作者 ZHANG Wen ZHANG ZhanJun 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第2期281-287,共7页
We put forward a generalized tripartite scheme for splitting an arbitrary 2-qubit pure state with three 2-qubit non-maximally en-tangled states as quantum channels.The scheme for the first time incorporates the Kraus ... We put forward a generalized tripartite scheme for splitting an arbitrary 2-qubit pure state with three 2-qubit non-maximally en-tangled states as quantum channels.The scheme for the first time incorporates the Kraus measurement into quantum information splitting scheme.In contrast to the similar scheme using the same quantum channels and the ancilla-entangled measurement,our scheme is superior in terms of operation and complexity,success probability,resource consumption and effciency. 展开更多
关键词 quantum state splitting non-maximally entangled state Kraus operator
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