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<p>Dephasing relaxation and quantum entanglement are studied in a two-spin-1/2 system with the dipole–dipole interaction on a basis of the Lindblad equation in multiple-quantum NMR experiments. A multiple-quantum (MQ) NMR dynamics is investigated. It is shown that MQ NMR spectrum consists of only MQ NMR coherences of zeroth- and plus/minus-second orders. Intensities of MQ NMR coherences are calculated. Quantum correlations (entanglement) are also considered. The relationship between entanglement and the MQ NMR coherence of the second order is also investigated.</p>

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Lindblad Dephasing Relaxation and Quantum Entanglement in Two-Spin Systems in Multiple-Quantum NMR Experiments

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • E. B. Fel’dman,
  • E. I. Kuznetsova,
  • E. I. Shipulya,
  • S. G. Vasil’ev,
  • A. I. Zenchuk

摘要

Dephasing relaxation and quantum entanglement are studied in a two-spin-1/2 system with the dipole–dipole interaction on a basis of the Lindblad equation in multiple-quantum NMR experiments. A multiple-quantum (MQ) NMR dynamics is investigated. It is shown that MQ NMR spectrum consists of only MQ NMR coherences of zeroth- and plus/minus-second orders. Intensities of MQ NMR coherences are calculated. Quantum correlations (entanglement) are also considered. The relationship between entanglement and the MQ NMR coherence of the second order is also investigated.