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Power-law scaling of correlations in statistically polarised nano-NMR | Alex Retzker's Group

Power-law scaling of correlations in statistically polarised nano-NMR

Citation:

Nicolas Staudenmaier, Vijayakumar-Sreeja, Anjusha , Oviedo-Casado, Santiago , Genov, Genko , Cohen, Daniel , Dulog, Daniel , Unden, Thomas , Striegler, Nico , Marshall, Alastair , Scheuer, Jochen , Findler, Christoph , Lang, Johannes , Schwartz, Ilai , Neumann, Philipp , Retzke, Alex , and Jelezko, Fedor . 10/8/2022. “Power-Law Scaling Of Correlations In Statistically Polarised Nano-Nmr”. Npj Quantum Information, 8, 120. https://www.nature.com/articles/s41534-022-00632-1.

Abstract:

Diffusion noise is a major source of spectral line broadening in liquid state nano-scale nuclear magnetic resonance with shallow nitrogen-vacancy centres, whose main consequence is a limited spectral resolution. This limitation arises by virtue of the widely accepted assumption that nuclear spin signal correlations decay exponentially in nano-NMR. However, a more accurate analysis of diffusion shows that correlations survive for a longer time due to a power-law scaling, yielding the possibility for improved resolution and altering our understanding of diffusion at the nano-scale. Nevertheless, such behaviour remains to be demonstrated in experiments. Using three different experimental setups and disparate measurement techniques, we present overwhelming evidence of power-law decay of correlations. These result in sharp-peaked spectral lines, for which diffusion broadening need not be a limitation to resolution.

Blog post: https://physicscommunity.nature.com/posts/what-does-diffusion-at-the-nano-scale-hold

 

Last updated on 10/20/2022