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arXiv · 2009.00889

Many-spin entanglement in multiple quantum NMR with a dipolar ordered initial state

Ilia D. Lazarev·Edward. B. Feldman
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Abstract

Multiple quantum (MQ) NMR with a dipolar ordered initial state opens new possibilities for the exploration of many-spin entanglement. In this paper, we investigate many-spin entanglement in a gas of spin-carrying molecules (atoms) in nanocavities in the conditions of MQ NMR with a dipolar ordered initial state. The second moment of the distribution of the intensities of MQ NMR coherences, which provides a lower bound on the quantum Fisher information, is used for an estimate of the number of the entangled spins. Many-spin entanglement is investigated at different temperatures and different numbers of spins.

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Ilia D. Lazarev, Edward. B. Feldman. 2020-09-02. Many-spin entanglement in multiple quantum NMR with a dipolar ordered initial state. https://doi.org/10.1134/s1063776120110059

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