Prof. Dr. Dmitry Budker

. The results might be accounted for by considering local thermal expansion. The temperature dependence of the ZFS parameters presents a significant challenge for diamond magnetometers and may ultimately limit their bandwidth and sensitivity.

20 November 2002 in Reviews of Modern Physics

Journal Article

Resonant nonlinear magneto-optical effects in atoms

The authors review the history, current status, physical mechanisms, experimental methods, and applications of nonlinear magneto-optical effects in atomic vapors. They begin by describing the pioneering work of Macaluso and Corbino over a century ago on linear magneto-optical effects (in which the properties of the medium do not depend on the light power) in the vicinity of atomic resonances. These effects are then contrasted with various nonlinear magneto-optical phenomena that have been studied both theoretically and experimentally since the late 1960s. In recent years, the field of nonlinear magneto-optics has experienced a revival of interest that has led to a number of developments, including the observation of ultranarrow (1-Hz) magneto-optical resonances, applications in sensitive magnetometry, nonlinear magneto-optical tomography, and the possibility of a search for parity- and time-reversal-invariance violation in atoms.

19 May 2014 in Physical Review X

Journal Article

Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr)

Dmitry Budker

Peter W. Graham

Micah Ledbetter

Surjeet Rajendran

Alexander O. Sushkov

We propose an experiment to search for QCD axion and axionlike-particle dark matter. Nuclei that are interacting with the background axion dark matter acquire time-varying

C P

-odd nuclear moments such as an electric dipole moment. In analogy with nuclear magnetic resonance, these moments cause precession of nuclear spins in a material sample in the presence of an electric field. Precision magnetometry can be used to search for such precession. An initial phase of this experiment could cover many orders of magnitude in axionlike-particle parameter space beyond the current astrophysical and laboratory limits. And with established techniques, the proposed experimental scheme has sensitivity to QCD axion masses

m_{a} ≲ 1 0^{- 9} eV

, corresponding to theoretically well-motivated axion decay constants

f_{a} ≳ 1 0^{16} GeV

. With further improvements, this experiment could ultimately cover the entire range of masses

m_{a} ≲ μ eV

, complementary to cavity searches.

About Me

Dmitry Budker is a University Professor at the Johannes Gutenberg University and a Section Leader, Helmholtz Institute Mainz, Germany. He is also a Professor of Graduate School, University of California at Berkeley, USA. He earned his PhD in physics from the University of California, Berkeley, in 1993, under Eugene D. Commins' supervision. Budker's research focuses on atomic, molecular, and optical physics, precision measurements, magnetic resonance, and fundamental symmetries. Currently, he is a Professor at Johannes Gutenberg University of Mainz and Helmholtz Institute Mainz, Germany, and Professor of the Graduate School at UC Berkeley. - *Awards*: Norman F. Ramsey Prize (2021), Miller Research Professorship at UC Berkeley, Fellow of the American Physical Society - *Research*: Atomic parity violation, magnetometry, zero- to ultra-low-field NMR, dark matter detection - *Notable Work*: Observed largest parity violation in atoms using ytterbium isotopes, developed NV-center magnetometry and zero-field NMR techniques.

Prof. Dr. Dmitry Budker

Prof. Dr. Dmitry Budker

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