Entanglement and multiple quantum coherence dynamics in spin clusters

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

With the purpose to reveal consistency between multiple quantum (MQ) coherences and entanglement, we investigate numerically the dynamics of these phenomena in one-dimensional linear chains and ring of nuclear spins 1/2 coupled by dipole-dipole interactions. As opposed to the calculation of the MQ coherence intensity based on the density matrix describing the spin system as a whole, we consider the "differentiated" intensity related only to the chosen spin pair based on the reduced density matrix. It is shown that the entanglement and the MQ coherence have similar dynamics only for nearest neighbors while we did not obtained any consistency for remote spins.

Original languageEnglish
Pages (from-to)379-386
Number of pages8
JournalQuantum Information Processing
Volume8
Issue number5
DOIs
StatePublished - 1 Oct 2009

Keywords

  • Concurrence
  • Entanglement
  • Multiple quantum coherences
  • Spin correlations
  • Spin dynamics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Statistical and Nonlinear Physics
  • Theoretical Computer Science
  • Signal Processing
  • Modeling and Simulation
  • Electrical and Electronic Engineering

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