Optical atomic clock comparison through turbulent air
Martha I. Bodine, Jean-Daniel Deschênes, Isaac Khader, William C. Swann, Holly Leopardi, K. Beloy, Tobias Bothwell, Samuel M. Brewer, Sarah Bromley, Jwo-Sy Chen, Scott A. Diddams, Robert Fasano, Tara M. Fortier, Youssef S. Hassan, David Hume, Dhruv Kedar, Colin J. Kennedy, A. Sophia Koepke, David R. Leibrandt, Andrew D. Ludlow, William F. McGrew, William R. Milner, Daniele Nicolodi, E. Oelker, T.E. Parker, John Robinson, Stefania Romish, Stefan Alaric Schäffer, Jeffrey A. Sherman, Lindsay Sonderhouse, Jian Yao, Jun Ye, Xiaogang Zhang, Nathan R. Newbury, Laura C. Sinclair
Abstract
The authors compare two state-of-the-art, ytterbium and strontium, optical atomic clocks across a 1.5-km open-air path between two laboratories. The ratio measured across the open air is in agreement with the simultaneous ratio measurement obtained using a conventional noise-cancelled fiber link.