title: Spectroscopy of surface-induced noise using shallow spins in diamond.
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.
authors.affiliation: The Racah Institute of Physics, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
authors.forename: Y
authors.initials: Y
authors.lastname: Romach
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology, University of Ulm, D-89081 Ulm, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Müller
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology, University of Ulm, D-89081 Ulm, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Unden
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology, University of Ulm, D-89081 Ulm, Germany.
authors.forename: L J
authors.initials: LJ
authors.lastname: Rogers
authors.affiliation: School of Fundamental Science and Technology, Keio University, Yokohama 223-8522 Japan.
authors.forename: T
authors.initials: T
authors.lastname: Isoda
authors.affiliation: School of Fundamental Science and Technology, Keio University, Yokohama 223-8522 Japan.
authors.forename: K M
authors.initials: KM
authors.lastname: Itoh
authors.affiliation: Element Six, Ltd, Kings Ride Park, Ascot SL5 8BP, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Markham
authors.affiliation: Element Six, Ltd, Kings Ride Park, Ascot SL5 8BP, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Stacey
authors.affiliation: Institute for Experimental Physics II, Linnéstraße 5, University of Leipzig, 04103 Leipzig, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Meijer
authors.affiliation: Institute for Experimental Physics II, Linnéstraße 5, University of Leipzig, 04103 Leipzig, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Pezzagna
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology, University of Ulm, D-89081 Ulm, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Naydenov
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology, University of Ulm, D-89081 Ulm, Germany.
authors.forename: L P
authors.initials: LP
authors.lastname: McGuinness
authors.affiliation: The Racah Institute of Physics, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel and Department of Applied Physics, Rachel and Selim School of Engineering, Hebrew University, Jerusalem 91904, Israel.
authors.forename: N
authors.initials: N
authors.lastname: Bar-Gill
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology, University of Ulm, D-89081 Ulm, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Jelezko
mesh_terms: D018130:Diamond / Q000737:chemistry*; D004581:Electronics; D008962:Models, Theoretical; D036103:Nanotechnology / Q000379:methods; D009584:Nitrogen / Q000737:chemistry; D059629:Signal-To-Noise Ratio; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D018130:Diamond; D009584:Nitrogen