Solid-state multiple quantum NMR in quantum information processing: exactly solvable models

EB Fel'Dman, AN Pyrkov… - … Transactions of the …, 2012 - royalsocietypublishing.org
Multiple quantum (MQ) NMR is an effective tool for the generation of a large cluster of
correlated particles, which, in turn, represent a basis for quantum information processing …

Quantum energy teleportation between spin particles in a Gibbs state

MR Frey, K Gerlach, M Hotta - Journal of Physics A: Mathematical …, 2013 - iopscience.iop.org
Energy in a multipartite quantum system appears from an operational perspective to be
distributed to some extent non-locally because of correlations extant among the system's …

Quantum discord versus second-order MQ NMR coherence intensity in dimers

EI Kuznetsova, AI Zenchuk - Physics Letters A, 2012 - Elsevier
We consider the quantum discord in a two-particle spin-1/2 system (dimer) governed by the
standard multiple quantum (MQ) Hamiltonian and reveal the relation between the discord …

Quantum correlations in a system of nuclear s= 1/2 spins in a strong magnetic field

EB Fel'dman, EI Kuznetsova… - Journal of Physics A …, 2012 - iopscience.iop.org
Entanglement and quantum discord for a pair of nuclear spins s= 1/2 in a nanopore filled
with a gas of spin-carrying molecules (atoms) are studied. The correlation functions …

Tomographic discord for a system of two coupled nanoelectric circuits

AK Fedorov, EO Kiktenko, OV Man'ko… - Physica Scripta, 2015 - iopscience.iop.org
We consider quantum correlations and quantum discord phenomena for two-qubit states
with X-type density matrices in the tomographic framework of quantum mechanics. By …

Thermodynamic cost of creating global quantum discord and local quantum uncertainty

N Behzadi, E Soltani, E Faizi - International Journal of Theoretical Physics, 2018 - Springer
In this paper, we investigate the fundamental limitations arising from initial temperature of
two initially uncorrelated thermal quantum systems for creating quantum correlations. In …

Quantum correlations in different density-matrix representations of spin-1/2 open chain

EB Fel'Dman, AI Zenchuk - Physical Review A—Atomic, Molecular, and Optical …, 2012 - APS
We consider quantum correlations in a spin-1/2 open chain of N nodes with the XY
Hamiltonian using different bases for the density-matrix representation and the initial state …

[HTML][HTML] Thermal quantum correlations of spin chain with multiple interactions

S Ahadpour, F Mirmasoudi - Revista mexicana de física, 2020 - scielo.org.mx
To explore the impact of distance between spins on quantum correlation, we compute trace
distance discord and spin squeezing in an anisotropic Heisenberg XYZ model with …

Quantum and classical correlations in high-temperature dynamics of two coupled large spins

VE Zobov - Theoretical and Mathematical Physics, 2013 - Springer
We study the dynamical correlations between two coupled spins depending on time and the
value of the spin quantum numbers. In the high-temperature approximation, we obtain …

Systems with stationary distribution of quantum correlations: open spin-1/2 chains with interaction

EB Fel'dman, AI Zenchuk - Quantum information processing, 2014 - Springer
Although quantum correlations in a quantum system are characterized by the evolving
quantities (which are entanglement and discord usually), we reveal such basis (ie the set of …