Spectroscopy of surface-induced noise using shallow spins in diamond

Y. Romach, C. Müller, T. Unden, L. J. Rogers, T. Isoda, K. M. Itoh, M. Markham, A. Stacey, J. Meijer, S. Pezzagna, B. Naydenov, L. P. McGuinness*, N. Bar-Gill, F. Jelezko

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

182 Scopus citations

Abstract

We report on the noise spectrum experienced by few nanometer deep nitrogen-vacancy centers in diamond as a function of depth, surface coating, magnetic field and temperature. Analysis reveals a double-Lorentzian noise spectrum consistent with a surface electronic spin bath in the low frequency regime, along with a faster noise source attributed to surface-modified phononic coupling. These results shed new light on the mechanisms responsible for surface noise affecting shallow spins at semiconductor interfaces, and suggests possible directions for further studies. We demonstrate dynamical decoupling from the surface noise, paving the way to applications ranging from nanoscale NMR to quantum networks.

Original languageAmerican English
Article number017601
JournalPhysical Review Letters
Volume114
Issue number1
DOIs
StatePublished - 6 Jun 2015

Bibliographical note

Publisher Copyright:
© 2015 American Physical Society.

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