Dynamical Decoupling of Spin-Clusters using Solid State NMR

TL;DR

This paper experimentally evaluates the effectiveness of different dynamical decoupling sequences, especially RUDD, in reducing decoherence in large spin-clusters using solid-state NMR techniques.

Contribution

It demonstrates the superior performance of RUDD sequences in suppressing decoherence in large spin systems, advancing quantum coherence preservation methods.

Findings

RUDD sequences outperform other dynamical decoupling methods.

Effective suppression of decoherence in large spin-clusters.

Enhanced preservation of multiple quantum coherences.

Abstract

In this work we experimentally study the efficiency of various dynamical decoupling sequences for suppressing decoherence of single as well as multiple quantum coherences on large spin-clusters. The system involves crystallites of a powdered sample containing a large number of molecular protons interacting via long-range dipole-dipole interaction. The multiple quantum coherences are prepared by progressively creating correlations in the spin lattice using standard pulse sequences implementing two-quantum average Hamiltonian. The spin system is then subjected to various dynamical decoupling sequences, followed by conversion into observable single quantum coherence by using time-reversal sequence. The experiments reveal superior performance of the recently introduced RUDD sequences in suppressing the decoherence.