title: Magnetic resonance spectroscopy of an atomically thin material using a single-spin qubit.
abstract: Two-dimensional (2D) materials offer a promising platform for exploring condensed matter phenomena and developing technological applications. However, the reduction of material dimensions to the atomic scale poses a challenge for traditional measurement and interfacing techniques that typically couple to macroscopic observables. We demonstrate a method for probing the properties of 2D materials via nanometer-scale nuclear quadrupole resonance (NQR) spectroscopy using individual atomlike impurities in diamond. Coherent manipulation of shallow nitrogen-vacancy (NV) color centers enables the probing of nanoscale ensembles down to approximately 30 nuclear spins in atomically thin hexagonal boron nitride (h-BN). The characterization of low-dimensional nanoscale materials could enable the development of new quantum hybrid systems, combining atomlike systems coherently coupled with individual atoms in 2D materials.
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: I
authors.initials: I
authors.lastname: Lovchinsky
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.|Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Sanchez-Yamagishi
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: E K
authors.initials: EK
authors.lastname: Urbach
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: S
authors.initials: S
authors.lastname: Choi
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: S
authors.initials: S
authors.lastname: Fang
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: T I
authors.initials: TI
authors.lastname: Andersen
authors.affiliation: National Institute for Materials Science, Tsukuba, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.affiliation: National Institute for Materials Science, Tsukuba, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Taniguchi
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.|Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.
authors.forename: A
authors.initials: A
authors.lastname: Bylinskii
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.|John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
authors.forename: E
authors.initials: E
authors.lastname: Kaxiras
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: P
authors.initials: P
authors.lastname: Kim
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA. lukin@physics.harvard.edu hongkun_park@harvard.edu.|Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.|Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA.
authors.forename: H
authors.initials: H
authors.lastname: Park
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA. lukin@physics.harvard.edu hongkun_park@harvard.edu.
authors.forename: M D
authors.initials: MD
authors.lastname: Lukin