Victor M. Acosta

Diamonds with a high density of nitrogen-vacancy centers for magnetometry applications

V. M. Acosta, E. Bauch, 2 M. P. Ledbetter, C. Santori, K.-M. C. Fu, P. E. Barclay, R. G. Beausoleil, H. Linget, J. F. Roch, F. Treussart, S. Chemerisov, W. Gawlik, and D. Budker 8, 9 1 Department of Physics, University of California, Berkeley, CA 94720-7300 2 Technische Universität Berlin, Hardenbergstraÿe 28, 10623 Berlin, Germany 3 Hewlett-Packard Laboratories, 1501 Page Mill Rd., Palo Alto, CA 94304 4 Ecole Normale Supérieure de Cachan, 61 Avenue du Président Wilson, 94235 Cachan CEDEX, France 5 Laboratoire de Photonique Quantique et Moléculaire (CNRS UMR 8537), Ecole Normale Supérieure de Cachan, 61 Avenue du Président Wilson, 94235 Cachan CEDEX, France 6 Argonne National Laboratory, Argonne, IL, 60439, U.S.A. 7 Center for Magneto-Optical Research, Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley CA 94720, USA budker@berkeley.edu (Dated: July 31, 2009)

Temperature and magnetic field dependent longitudinal spin relaxation in nitrogen-vacancy ensembles in diamond

We present an experimental study of the longitudinal electron-spin relaxation time (T1) of negatively charged nitrogen-vacancy (NV) ensembles in diamond. T1 was studied as a function of temperature from 5 to 475 K and magnetic field from 0 to 630 G for several samples with various NV and nitrogen concentrations. Our studies reveal three processes responsible for T1 relaxation. Above room temperature, a two-phonon Raman process dominates; below room temperature, we observe an Orbach-type process with an activation energy of 73(4) meV, which closely matches the local vibrational modes of the NV center. At yet lower temperatures, sample dependent cross-relaxation processes dominate, resulting in temperature independent values of T1 from milliseconds to minutes. The value of T1 in this limit depends sensitively on the magnetic field and can be tuned by more than 1 order of magnitude.

Coupling of nitrogen-vacancy centers to photonic crystal resonators in monocrystalline diamond

The zero-phonon transition rate for nitrogen-vacancy centers is enhanced by coupling to photonic crystal resonators fabricated in monocrystalline diamond. Autocorrelation measurements on the spectrally filtered zero-phonon line demonstrate coupling of a single emitter.

Spin-Exchange-Relaxation-Free Magnetometry with Cs Vapor

We describe a Cs atomic magnetometer operating in the spin-exchange-relaxation-free (SERF) regime. With a vapor cell temperature of

Broadband magnetometry by infrared-absorption detection of nitrogen-vacancy ensembles in diamond

103\text{ }\ifmmode^\circ\else\textdegree\fi{}\text{C}

Optical and Spin Coherence Properties of Nitrogen-Vacancy Centers Placed in a 100 nm Thick Isotopically Purified Diamond Layer

we achieve intrinsic magnetic resonance widths

Nonlinear magneto-optical rotation with frequency-modulated light in the geophysical field range

\ensuremath{\Delta}B=17\text{ }\ensuremath{\mu}\text{G}

Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond.

corresponding to an electron spin-relaxation rate of

Quantum photonic devices in single-crystal diamond

300\text{ }{\text{s}}^{\ensuremath{-}1}

Electromagnetically induced transparency in a diamond spin ensemble enables all-optical electromagnetic field sensing.

when the spin-exchange rate is