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New entanglement-assisted quantum MDS codes

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2021; 19 (03)

Entanglement-assisted quantum error-correcting codes (EAQECCs) can be obtained from arbitrary classical linear codes based on the entanglement-assiste......

Correlation between the continuous-time quantum walk and cliques in graphs and its application

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2021; 19 (01)

The continuous-time quantum walk (CTQW) provides a new approach to problems in graph theory. In this paper, the correlation between the CTQW and cliqu......

A bound on expectation values and variances of quantum observables via Renyi entropy and Tsallis entropy

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2021; 19 (03)

Entropy is a key concept of quantum information theory. The entropy of a quantum system is a measure of its randomness and has many applications in qu......

A new construction of mutually unbiased maximally entangled bases in C-q circle times C-q

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2021; 19 (2)

This paper is devoted to constructing mutually unbiased maximally entangled bases (MUMEBs) in C-q circle times C-q, where q is a prime power. We prove......

Enhancing entanglement of two-qubit states from amplitude damping channel using single-qubit unitary operation and local filtering operation

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2021; 19 (01)

We propose a scheme to enhance entanglement from amplitude damping or correlated amplitude damping decoherence. We show that entanglement sudden death......

Performance of reference-frame-independent quantum key distribution in underwater channel

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2021; 19 (1)

During free-space quantum key distribution, the rotation and fluctuation of reference frame degrades the performance of quantum key distribution (QKD)......

Quantum synchronization and correlations of two qutrits in a non-Markovian bath

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (3)

We investigate quantum synchronization and correlations of two qutrits in one non-Markovian environment using the hierarchy equation method. There is ......

An asymmetric dynamic multiparty quantum secret sharing against active attacks

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (3)

We propose a dynamic quantum secret sharing (DQSS) protocol based on traveling single-qubits where any number of players can join or leave the protoco......

Quantum image sharpness estimation based on the Laplacian operator

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (3)

In order to solve the high complexity of classical image processing, a quantum scheme for image sharpness estimation based on the Laplacian operator i......

Single-state semi-quantum key distribution protocol and its security proof

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (4)

Semi-quantum key distribution (SQKD) can share secret keys by using less quantum resource than its fully quantum counterparts, and this likely makes S......

Unambiguous discrimination between linearly dependent symmetric states with multiple copies

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (4)

We investigate the unambiguous discrimination (UD) among three linearly dependent (LD) symmetric states with N copies. The optimal discrimination prob......

Local quantum Fisher information and one-way quantum deficit in spin-1/2 XX Heisenberg chain with three-spin interaction

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (4)

We explore quantum phase transitions in the spin-1/2 XX chain with three-spin interaction in terms of local quantum Fisher information and one-way qua......

Cohering and decohering power of Gaussian channels

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (4)

In this paper, we generalized the concepts of the cohering power and decohering power to Gaussian channels for continuous-variable systems with respec......

Cyclic and cyclic controlled quantum teleportation in a high-dimension system

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (4)

In this paper, two schemes for cyclic quantum teleportation (CQT) and cyclic controlled quantum teleportation (CCQT) in a high-dimension system are pr......

Quantum image encryption based on Lorenz hyper-chaotic system

期刊: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2020; 18 (5)

According to the higher security of higher-dimensional chaotic system, a new scheme of quantum image encryption and decryption based on Lorenz hyper-c......

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