Probing scalar coupling differences via long-lived singlet states

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Probing scalar coupling differences via long-lived singlet states

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Title: Probing scalar coupling differences via long-lived singlet states
Author: Devience, Stephen; Walsworth, Ronald Lee; Rosen, Matthew Scot

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Citation: DeVience, Stephen J., Ronald L. Walsworth, and Matthew S. Rosen. 2016. “Probing Scalar Coupling Differences via Long-Lived Singlet States.” Journal of Magnetic Resonance 262 (January): 42–49. doi:10.1016/j.jmr.2015.12.003.
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Abstract: We probe small scalar coupling differences via the coherent interactions between two nuclear spin singlet states in organic molecules. We show that the spin-lock induced crossing (SLIC) technique enables the coherent transfer of singlet order between one spin pair and another. The transfer is mediated by the difference in syn and anti vicinal or long-range J couplings among the spins. By measuring the transfer rate, we calculate a J coupling difference of 8 ± 2 mHz in phenylalanine–glycine–glycine and 2.57±0.04 Hz in glutamate. We also characterize a coherence between two singlet states in glutamate, which may enable the creation of a long-lived quantum memory.
Published Version: doi:10.1016/j.jmr.2015.12.003
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:34744133
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