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Improved Constraints on Isotropic Shift and Anisotropies of the Speed of Light using Rotating Cryogenic Sapphire Oscillators
Michael A. Hohensee, Paul. L. Stanwix, Michael Edmund Tobar +3
We demonstrate that Michelson-Morley tests, which detect direction-dependent anisotropies in the speed of light, can also be used to place limits upon isotropic deviations of the v…
\emph{In-situ} determination of astro-comb calibrator lines to better than 10 cm s
C. -H. Li, A. Glenday, A. J. Benedick +11
Improved wavelength calibrators for high-resolution astrophysical spectrographs will be essential for precision radial velocity (RV) detection of Earth-like exoplanets and direct o…
Coherence of Nitrogen-Vacancy Electronic Spin Ensembles in Diamond
P. L. Stanwix, L. M. Pham, J. R. Maze +7
We present an experimental and theoretical study of electronic spin decoherence in ensembles of nitrogen-vacancy (NV) color centers in bulk high-purity diamond at room temperature.…
Toward a Broadband Astro-comb: Effects of Nonlinear Spectral Broadening in Optical Fibers
Guoqing Chang, Chih-Hao Li, David F. Phillips +2
We propose and analyze a new approach to generate a broadband astro-comb by spectral broadening of a narrowband astro-comb inside a highly nonlinear optical fiber. Numerical modeli…