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Quantum Chemistry

Probing Scalar Coupling Differences via Long-Lived Singlet States

arXiv
Authors: Stephen J. DeVience, Ronald L. Walsworth, Matthew S. Rosen

Year

2015

Paper ID

27367

Status

Preprint

Abstract Read

~2 min

Abstract Words

100

Citations

N/A

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 cis and trans vicinal J couplings among the spins. By measuring the transfer rate, we calculate a J coupling difference of 8 pm 2 mHz in phenylalanine-glycine-glycine and 2.57 pm 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.

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  • We probe small scalar coupling differences via the coherent interactions between two nuclear spin singlet states in organic molecules.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1509.02240 [2] arXiv https://arxiv.org/abs/1509.02240 [3] Publisher https://arxiv.org/abs/1509.02240

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