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arXiv · 2403.03924

Relaxation of maximally entangled quantum states of two nonequivalent nuclear spins in a liquid

Georgiy Baroncha·Alexander Perepukhov·Boris V. Fine
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Abstract

We investigate both experimentally and theoretically the relaxation of pseudo-pure maximally entangled states (Bell states) of two nuclear spins 1H-13C belonging to a molecule in a liquid. The Bell states are obtained by a method based on a detuned Hartmann-Hahn cross-polarization condition. Their entangled character is verified by quantum-state tomography. Our relaxation measurements reveal different relaxation rates for different Bell states. We interpret this difference as originating from cross-correlations between different relaxation mechanisms, thereby demonstrating that the measurements of the differential relaxation of Bell states are potentially useful for advanced NMR characterization of liquids.

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Georgiy Baroncha, Alexander Perepukhov, Boris V. Fine. 2024-03-06. Relaxation of maximally entangled quantum states of two nonequivalent nuclear spins in a liquid. https://arxiv.org/abs/2403.03924

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