Entanglement in many-body systems
Recent interest in aspects common to quantum information and condensed matter has
prompted a flurry of activity at the border of these disciplines that were far distant until a few …
prompted a flurry of activity at the border of these disciplines that were far distant until a few …
Factorization and entanglement in general spin arrays in nonuniform transverse fields
We determine the conditions for the existence of a pair of degenerate parity breaking
separable eigenstates in general arrays of arbitrary spins connected through XYZ couplings …
separable eigenstates in general arrays of arbitrary spins connected through XYZ couplings …
Global entanglement in chains
N Canosa, R Rossignoli - Physical Review A—Atomic, Molecular, and Optical …, 2006 - APS
We examine the thermal entanglement of XXZ-type Heisenberg chains in the presence of a
uniform magnetic field along the z axes through the evaluation of the negativity associated …
uniform magnetic field along the z axes through the evaluation of the negativity associated …
Thermal entanglement of a two-qutrit XX spin chain with Dzialoshinski–Moriya interaction
X San Ma - Optics communications, 2008 - Elsevier
Thermal entanglement of a two-qutrit XX spin chain with Dzialoshinski–Moriya interaction -
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ScienceDirect Skip to main contentSkip to article Elsevier logo Journals & Books Search …
Entanglement between distant qubits in cyclic chains
N Canosa, R Rossignoli - Physical Review A—Atomic, Molecular, and Optical …, 2007 - APS
We evaluate the exact concurrence between any two spins in a cyclic XX chain of n spins
placed in a uniform transverse magnetic field, at both zero and finite temperature, by means …
placed in a uniform transverse magnetic field, at both zero and finite temperature, by means …
Entanglement and coherence in a spin-s XXZ system under non-uniform fields
We investigate entanglement and coherence in an XXZ spin s pair immersed in a non-
uniform transverse magnetic field. The ground state and thermal entanglement phase …
uniform transverse magnetic field. The ground state and thermal entanglement phase …
Thermal entanglement and teleportation in a two-qubit Heisenberg XXZ chain with different Dzyaloshinskii–Moriya interactions
M Qin, Z Bai, BY Li, JS Lin - Optics Communications, 2011 - Elsevier
We study the thermal output entanglement and teleportation in a two qubit Heisenberg XXZ
chain with different Dzyaloshinskii–Moriya (DM) interactions. The analytical expressions of …
chain with different Dzyaloshinskii–Moriya (DM) interactions. The analytical expressions of …
Description of thermal entanglement with the static path plus random-phase approximation
We discuss the application of the static path plus random-phase approximation (SPA+ RPA)
and the ensuing mean field+ RPA treatment to the evaluation of entanglement in composite …
and the ensuing mean field+ RPA treatment to the evaluation of entanglement in composite …
Evaluation of ground-state entanglement in spin systems with the random phase approximation
We discuss a general treatment based on the mean field plus random-phase approximation
(RPA) for the evaluation of subsystem entropies and negativities in ground states of spin …
(RPA) for the evaluation of subsystem entropies and negativities in ground states of spin …
Entanglement dynamics of one-dimensional driven spin systems in time-varying magnetic fields
We study the dynamics of nearest-neighbor entanglement for a one-dimensional spin chain
with a nearest-neighbor time-dependent Heisenberg coupling J (t) between the spins in the …
with a nearest-neighbor time-dependent Heisenberg coupling J (t) between the spins in the …