One-way Quantum Deficit and Decoherence for Two-qubit $X$ States

Abstract

We study one-way quantum deficit of two-qubit $X$ states systematically from analytical derivations. An effective approach to compute one-way quantum deficit of two-qubit $X$ states has been provided. Analytical results are presented as for detailed examples. Moreover, we demonstrate the decoherence of one-way quantum deficit under phase damping channel.

arXiv comment10 pages, 5 figures

References in corpus (31)

• Quantum entanglement
• Introducing Quantum Discord
• Classical, quantum and total correlations
• The classical-quantum boundary for correlations: discord and related measures
• Quantum discord and the power of one qubit
• Necessary and sufficient condition for non-zero quantum discord
• Experimental quantum computing without entanglement
• Quantum discord for two-qubit X-states
• Unified View of Quantum and Classical Correlations
• A Thermodynamical Approach to Quantifying Quantum Correlations
• Quantum versus classical correlations in Gaussian states
• Gaussian quantum discord
• Quantum discord as resource for remote state preparation
• Local versus non-local information in quantum information theory: formalism and phenomena
• Interpreting quantum discord through quantum state merging
• Operational interpretations of quantum discord
• Quantum Discord and Maxwell's Demons
• Quantum discord for general two--qubit states: Analytical progress
• Quantum discord of two-qubit X-states
• Linking Quantum Discord to Entanglement in a Measurement
• Optimal measurements to access classical correlations of two-qubit states
• Quantum discord for two-qubit X states: Analytical formula with very small worst-case error
• Assisted state discrimination without entanglement
• On the optimal measurement for quantum discord of two-qubit states
• Orthogonal measurements are {\it almost} sufficient for quantum discord of two qubits
• A new type of complementarity between quantum and classical information
• On the quantum discord of general X states
• Analytical solutions and criteria for the quantum discord of two-qubit X-states
• The One-Way Information Deficit and Geometry for a Class of Two-qubit States
• NMR dynamics of quantum discord for spin-carrying gas molecules in a closed nanopore
• One-Way Deficit of Two Qubit X States

Cited by in corpus (9)

• On the quantum correlations in two-qubit XYZ spin chains with Dzyaloshinsky-Moriya and Kaplan-Shekhtman-Entin-Wohlman-Aharony interactions
• Quantum discord of certain two-qubit states
• Temperature-field phase diagrams of one-way quantum work deficit in two-qubit XXZ spin systems
• The sudden change phenomenon of quantum discord
• A characterization of entangled two-qubit states via partial-transpose-moments
• Phase diagram for the one-way quantum deficit of two-qubit X states
• Landau-type sudden transitions of quantum correlations
• On the possibility to detect quantum correlation regions with the variable optimal measurement angle
• One-way quantum deficit for $2\otimes d$ systems