Nanoscale magnetometry using a single-spin system in diamond

R. S. Said*, D. W. Berry, J. Twamley

*Corresponding author for this work

Research output: Contribution to journalArticle

25 Citations (Scopus)
19 Downloads (Pure)

Abstract

We propose a protocol to estimate magnetic fields using a single nitrogen-vacancy (N-V) center in diamond, where the estimate precision scales inversely with time, δB~1/T, rather than the square-root of time, δB~1/√T. The method is based on converting the task of magnetometry into phase estimation, performing quantum phase estimation on a single N-V nuclear spin using either adaptive or nonadaptive feedback control, and the recently demonstrated capability to perform single-shot readout within the N-V. We present numerical simulations to show that our method provides an estimate whose precision scales close to ~1/T (T~ the total estimation time), and moreover will give an unambiguous estimate of the static magnetic field experienced by the N-V. By combining this protocol with recent proposals for scanning magnetometry using an N-V, our protocol will provide a significant decrease in signal acquisition time while providing an unambiguous spatial map of the magnetic field.

Original languageEnglish
Article number125410
Pages (from-to)1-7
Number of pages7
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume83
Issue number12
DOIs
Publication statusPublished - 17 Mar 2011

Bibliographical note

Said, R. S., Berry, D. W. & Twamley, J., Physical review B. Condensed matter and materials physics, Vol. 83, Issue 12, article no. 125410, 2011. Copyright 2011 by the American Physical Society. The original article can be found at http://dx.doi.org/10.1103/PhysRevB.83.125410

Fingerprint Dive into the research topics of 'Nanoscale magnetometry using a single-spin system in diamond'. Together they form a unique fingerprint.

Cite this