Coherent dynamical recoupling of diffusion-driven decoherence in magnetic resonance

TL;DR

This paper introduces a novel dynamical decoupling technique in magnetic resonance that selectively recouples diffusion processes in confined spaces, enabling measurement of restriction lengths in systems like pores and cells.

Contribution

It presents a new method for selectively recoupling diffusion-driven decoherence, expanding the application of dynamical decoupling in diffusion NMR.

Findings

Demonstrated the method's ability to measure restriction lengths

Validated the approach with corroborating experiments

Enhanced control over diffusion processes in confined systems

Abstract

During recent years, dynamical decoupling (DD) has gained relevance as a tool for manipulating quantum systems and extracting information from them. This is particularly relevant for spins involved in nuclear magnetic resonance (NMR), where DD sequences can be used to prolong quantum coherences, or for selectively couple/decouple the effects imposed by random environmental fluctuations. In this Letter, we show that one can exploit these concepts in order to selectively recouple diffusion processes in restricted spaces. The ensuing method provides a novel tool to measure restriction lengths in confined systems such as capillaries, pores or cells. The principles of this method for selectively recoupling diffusion-driven decoherence, its standing within the context of diffusion NMR, and corroborating experiments, are presented.