Coherent dynamical recoupling of diffusion-driven decoherence in magnetic resonance

Gonzalo A. Alvarez, Noam Shemesh, Lucio Frydman

Research output: Contribution to journalArticlepeer-review

Abstract

During recent years, dynamical decoupling (DD) has gained relevance as a tool for manipulating and interrogating quantum systems. This is particularly relevant for spins involved in nuclear magnetic resonance (NMR), where DD sequences can be used to prolong quantum coherences, or to selectively couple or decouple the effects imposed by random environmental fluctuations. In this Letter, we show that these concepts can be exploited 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, extensions to the characterization of other kinds of quantum fluctuations, and corroborating experiments, are presented.

Original languageEnglish
Article number080404
JournalPhysical review letters
Volume111
Issue number8
DOIs
StatePublished - 20 Aug 2013

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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