2102 フライトシミュレータ外部視界の横視野角とパイロット横揺れ操舵特性(OS.5 人間/機械/環境システム)

2000/12/12 by Borivoje Dakić, Borivoje Dakic, Vlatko Vedral +4 · 39 citations
Computer Science · Medicine · Physics and Astronomy · #Computer science #Medicine #Physical medicine and rehabilitation #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum algorithm #Quantum capacity #Quantum computer #Quantum discord #Quantum dynamics #Quantum entanglement #Quantum information #Quantum mechanics #Quantum network #Quantum process #Qubit #Statistical physics #quant-ph

paper · pdf · doi:10.1103/physrevlett.105.190502

published in 交通・物流部門大会講演論文集 2000(9), 141-144 (American Physical Society) · minor changes, published version

openalex publication_date 2000/12/12 · arxiv created 2010/11/03 · arxiv updated 2010/11/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/11

Abstract

Quantum discord characterizes "nonclassicality" of correlations in quantum mechanics. It has been proposed as the key resource present in certain quantum communication tasks and quantum computational models without containing much entanglement. We obtain a necessary and sufficient condition for the existence of nonzero quantum discord for any dimensional bipartite states. This condition is easily experimentally implementable. Based on this, we propose a geometrical way of quantifying quantum discord. For two qubits this results in a closed form of expression for discord. We apply our results to the model of deterministic quantum computation with one qubit, showing that quantum discord is unlikely to be the reason behind its speedup.

Citations

• Role of entanglement and correlations in mixed-state quantum computation
• Completely positive maps and classical correlations
• Classical, quantum and total correlations
• On the Einstein Podolsky Rosen paradox

Cited by

• Generation of Entanglement, Measure of Multipartite Entanglement in Fermionic Systems and Quantum Discord in Bipartite Systems and Heisenberg Chains
• Geometric measure of quantum discord and the geometry of a class of two-qubit states
• Quantum discord for the general two-qubit case
• Geometric measure of quantum discord over two-sided projective measurements
• The optimal approximation of qubit states with limited quantum states
• Purity as a witness for initial system-environment correlations in open-system dynamics
• Anisotropic Invariance and the Distribution of Quantum Correlations
• Creating quantum correlations through local nonunitary memoryless channels
• Computing quantum discord is NP-complete
• Quantum correlation with sandwiched relative entropies: Advantageous as order parameter in quantum phase transitions
• Assisted optimal state discrimination without entanglement
• CLASSICALITY WITNESS FOR TWO-QUBIT STATES
• Characterizing entanglement using quantum discord over state extensions
• Entanglement verification and steering when Alice and Bob cannot be trusted
• Comparative study of quantum discord and geometric discord for generic bipartite states
• CREATING QUANTUM DISCORD THROUGH LOCAL GENERALIZED AMPLITUDE DAMPING
• Quantum correlation measure in arbitrary bipartite systems
• Optimal measurements to access classical correlations of two-qubit states
• Entanglement–Coherence and Discord–Coherence analytical relations for X states
• Internal Entanglement and External Correlations of Any Form Limit Each Other
• Homodyne Estimation of Gaussian Quantum Discord
• Carboxylate-based molecular magnet: One path toward achieving stable quantum correlations at room temperature
• Partial coherence and quantum correlation with fidelity and affinity distances
• Local unitary equivalence of arbitrary dimensional bipartite quantum states
• Simulating Open Quantum Systems with Hamiltonian Ensembles and the Nonclassicality of the Dynamics
• Quantum correlations and distinguishability of quantum states
• Discord and Nonclassicality in Probabilistic Theories
• Thermal geometric discords in a two-qutrit system
• Non-commutative measure of quantum correlations under local operations
• One-norm geometric quantum discord under decoherence
• Quantum coherence and uncertainty in the anisotropic XY chain
• Monogamy relations of nonclassical correlations for multi-qubit states
• Measuring Gaussian Quantum Information and Correlations Using the Rényi Entropy of Order 2
• Problem of quantifying quantum correlations with non-commutative discord
• Negativity of quantumness and its interpretations
• Upper bound and shareability of quantum discord based on entropic uncertainty relations
• FROZEN DISCORD IN NON-MARKOVIAN DEPHASING CHANNELS
• MEASUREMENT-INDUCED NONLOCALITY OVER TWO-SIDED PROJECTIVE MEASUREMENTS
• Equivalence of qubit-environment entanglement and discord generation via pure dephasing interactions and the resulting consequences
• Experimental verification of quantum discord in continuous-variable states

Related

• Tight bounds for the quantum discord
• Foundations of Quantum Discord
• Computing quantum discord is NP-complete
• Witnessing the quantum discord of all the unknown states
• A Comparison of the Attempts of Quantum Discord and Quantum Entanglement to Capture Quantum Correlations