Published in Quantum Information Processing
The distributions of tripartite quantum information (including entanglement, discord-like correlation and coherence) with orbital angular momentum states in non-Kolmogorov turbulent atmosphere are investigated. We introduce two exactly computable measures for tripartite discord-like correlation and tripartite coherence by consider the geometric mea...
Published in Quantum Information Processing
In distributed quantum computation, quantum remote-controlled gates are used frequently and applied on separate nodes or subsystems of a network. One of the universal and well-known controlled gates is the n-qubit controlled-NOT gate, especially Toffoli gate for the case of three qubits, which are frequently used to synthesize quantum circuits. In ...
Published in Quantum Information Processing
We simulate the evolution of three-node spin chain on the quantum processor of IBM Quantum Experience using the diagonalization of XX-Hamiltonian and representing the evolution operator in terms of CNOT operations and one-qubit rotations. We study the single excitation transfer from the first to the third node and show the significant difference be...
Published in Quantum Information Processing
We aim to give more insights into adiabatic evolution concerning the occurrence of anti-crossings and their link to the spectral minimum gap Δmin\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{...
Published in Quantum Information Processing
Coherence is an important quantum resource in quantum information theory and can be quantified by entropy. We propose a class of genuine coherence quantity which is defined via the difference of entropies between the state ϱ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage...
Published in Quantum Information Processing
Semi-quantum private comparison (SQPC) aims to compare the equality of the classical participants’ secrets with the help of a semi-honest TP, in which TP has full quantum capability while the classical participants’ quantum capability is limited. In the existing SQPC protocols, the entanglement resource (e.g., entangled state preparation and entang...
Published in Quantum Information Processing
We investigate the multipartite entanglement and the trace distance for the two-dimensional XXZ anisotropic spin-12\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\frac...
Published in Quantum Information Processing
The passive-state preparation (PSP) is promising to play an important role in the future on-chip continuous variable quantum key distribution (CVQKD). However, an accurate channel parameter characterization of the PSP-based free-space system has not been established so far. Here, we consider the channel parameter characterization of the PSP-based C...
Published in Quantum Information Processing
We present an economical entanglement purification protocol for the multi-photon polarization-entangled system in a Greenberger–Horne–Zeilinger (GHZ) state. We use one pair of two-photon Bell state or M-photon GHZ state (M
Published in Quantum Information Processing
We propose a new training algorithm for supervised quantum classifiers. Here, we have harnessed the property of quantum entanglement to build a model that can simultaneously manipulate multiple training samples along with their labels. Subsequently, a Bell-inequality-based cost function is constructed, that can encode errors from multiple samples, ...
