Quantum entanglement and quantum discord in dimers in multiple quantum NMR experiments
arXiv:1701.03585 · doi:10.1117/12.2264353
Abstract
Quantum correlations in multiple quantum (MQ) NMR experiments are investigated in two-spin systems (dimers). In the initial moment of time one spin is in a pure quantum polarized state and the other spin is in the thermodynamic equilibrium state defined by the temperature of the sample. MQ NMR dynamics of dimers is investigated. It is shown that MQ NMR coherences of only the zeroth and second orders emerge in such a system. The intensities of those coherences are calculated. Entangled states appear in the course of the system evolution in the MQ NMR experiment. The quantum discord is obtained in the high temperature approximation.
arXiv comment5 pages, 2 figures
References in corpus (9)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Introducing Quantum Discord
- Classical, quantum and total correlations
- Simulations of Information Transport in Spin Chains
- Evolution of spin entanglement and an entanglement witness in multiple-quantum NMR experiments
- Decay of spin coherences in one-dimensional spin systems
- Quantum discord versus second-order MQ NMR coherence intensity in dimers
- Asymmetry of bipartite quantum discord
- Multiple Quantum NMR Dynamics in Pseudopure States