Controlling the quantum dynamics of a mesoscopic spin bath in diamond

TitleControlling the quantum dynamics of a mesoscopic spin bath in diamond
Publication TypeJournal Article
Year of Publication2012
Authorsde Lange G, van der Sar T, Blok M, Wang ZH, Dobrovitski V, Hanson R
Journal TitleScientific Reports
Volume2
Pages382
Date Published04
Type of ArticleArticle
ISBN Number2045-2322
Accession NumberWOS:000303523800002
Keywordscoherent dynamics, electron-spin, RESONANCE
Abstract

Understanding and mitigating decoherence is a key challenge for quantum science and technology. The main source of decoherence for solid-state spin systems is the uncontrolled spin bath environment. Here, we demonstrate quantum control of a mesoscopic spin bath in diamond at room temperature that is composed of electron spins of substitutional nitrogen impurities. The resulting spin bath dynamics are probed using a single nitrogen-vacancy (NV) centre electron spin as a magnetic field sensor. We exploit the spin bath control to dynamically suppress dephasing of the NV spin by the spin bath. Furthermore, by combining spin bath control with dynamical decoupling, we directly measure the coherence and temporal correlations of different groups of bath spins. These results uncover a new arena for fundamental studies on decoherence and enable novel avenues for spin-based magnetometry and quantum information processing.

URL<Go to ISI>://WOS:000303523800002
DOI10.1038/srep00382
Alternate JournalSci Rep