Magnetic Resonance Spectroscopy of an Atomically Thin Material Using a Single-Spin Qubit
Fig. 4. NQR spectroscopy of a h-BN monolayer and bilayer*. [Reprinted with permission from AAAS ©2017].
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. A collaborative Report in Science by members of the Park, Lukin, Kaxiras, and Kim groups demonstrate a method for probing the properties of 2D materials via nanometer-scale nuclear quadrupole resonance (NQR) spectroscopy using individual atom-like impurities in diamond. Coherent manipulation of shallow nitrogen-vacancy (NV) color centers enables the probing of nanoscale ensembles down to ~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 atom-like systems coherently coupled with individual atoms in 2D materials.
*See I. Lovchinsky, J.D. Sanchez-Yamagishi, E.K. Urbach, S. Choi, S. Fang, T.I. Andersen, K. Watanabe, T. Taniguchi, A. Bylinskii, E. Kaxiras, P. Kim, H. Park, M.D. Lukin, "Magnetic resonance spectroscopy of an atomically thin material using a single-spin qubit," Science 2017 | DOI: 10.1126/science.aal2538.