Published in Quantum Information Processing
Semi-quantum cryptography was proposed to deal with the issue that some players are only able to perform classical operations, thus alleviating the cost of its implementation. For achieving the better universal setting for current environment, we propose a mutual authenticated semi-quantum-honest key agreement scheme with three-particle entangled s...
Published in Quantum Information Processing
Environment-induced decoherence would shorten the transmission distance or storage time of entangled states. Enhancing the intrinsic robustness and prolonging the disentangling time of entangled states are thus of importance. We here study the problem of optimal qubit-basis under which a two-qubit state has maximal residual entanglement or longest ...
Published in Quantum Information Processing
Rapid development has taken place in quantum algorithms, but few of them can be implemented directly on the quantum computer because of the coupling constraint and high error rates of quantum computer operations. Transforming a circuit into an executable one on the quantum computer with the highest fidelity is an NP problem. Therefore, the algorith...
Published in Quantum Information Processing
Monogamy and polygamy are the most striking features of the quantum world. We investigate the monogamy and polygamy relations satisfied by all quantum correlation measures for arbitrary multipartite quantum states. By introducing residual quantum correlations, analytical polygamy inequalities are presented, which are shown to be tighter than the ex...
Published in Quantum Information Processing
We explore decay behaviors of the nonlocal advantage of quantum coherence (NAQC) for two qubits traversing the phase flap, bit flip, bit-phase flip, and depolarizing channels. For the input Bell and Bell-diagonal states, we showed analytically that the NAQC of the output states can always be noticeably enhanced due to the correlations between conse...
Published in Quantum Information Processing
We adequately characterize the distillability of quantum coherence under the maximally incoherent operations (MIO) in the probabilistic distillation’s framework. In particular, we prove that every non-full-rank coherent state exhibits a nonzero probability in the task of probabilistic deterministic distillation. Moreover, we find that the maximal c...
Published in Quantum Information Processing
We present a theoretical scheme for the enhancement of entanglement between the two distant mechanical resonators in a hybrid optomechanical system which is composed of a single-mode optomechanical cavity with an atomic ensemble of two-level atoms and two mechanical resonators coupled via Coulomb field. Our results show that the atomic detuning, co...
Published in Quantum Information Processing
We apply Li et al.’s “minimal” quantization rules (Phys. Lett. A 306, 73, 2002) to investigate the quantum version of the Stackelberg–Bertrand duopoly, especially how the quantum entanglement affects the second-mover advantage in the Stackelberg–Bertrand duopoly. It is found that positive quantum entanglement is more favourable to the profit of the...
Published in Quantum Information Processing
In this paper, a continuous variable B92 quantum key distribution protocol is proposed using single photon added and subtracted coherent states, which are prepared by adding and subsequently subtracting a single photon on a coherent state. It is established that in contrast to the traditional discrete variable B92 protocol, this protocol for quantu...
Published in Quantum Information Processing
We study the monogamy and polygamy relations related to quantum correlations for multipartite quantum systems. General monogamy relations are presented for the α\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{...
