Correlated noise in Brownian motion allows for super resolution

Santiago Oviedo-Casado*, Amit Rotem, Ramil Nigmatullin, Javier Prior, Alex Retzker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Diffusion broadening of spectral lines is the main limitation to frequency resolution in non-polarized liquid state nano-NMR. This problem arises from the limited amount of information that can be extracted from the signal before losing coherence. For liquid state NMR as with most generic sensing experiments, the signal is thought to decay exponentially, severely limiting resolution. However, there is theoretical evidence that predicts a power law decay of the signal’s correlations due to diffusion noise in the non-polarized nano-NMR scenario. In this work we show that in the NV based nano-NMR setup such diffusion noise results in high spectral resolution.

Original languageAmerican English
Article number19691
JournalScientific Reports
Volume10
Issue number1
DOIs
StatePublished - Dec 2020

Bibliographical note

Publisher Copyright:
© 2020, The Author(s).

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