MPL DLS Talk: Squeezing and Quantum Metrology with Optical Frequency Combs

Speaker: Scott A. Diddams, University of Colorado Boulder

Abstract
The optical frequency comb is one of the most significant laser measurement tools ever realized. It has made routine the counting of the oscillations of light and thereby enables the measurement of quantized energy states of atoms and ions with >18 digits of precision. Yet this is all done with lasers well described as classical states of light. Despite the close connection to quantum systems, there are few demonstrations of how an optical frequency comb might yield a quantum advantage for metrology. In this talk I will highlight our exploration of the quantum limits of frequency comb metrology, and I will highlight examples where squeezed frequency combs are impacting applications in spectroscopic sensing and clocks.

Biography
Scott Diddams holds the Robert H. Davis Endowed Chair at the University of Colorado Boulder, where he is also Professor of Electrical Engineering and Physics. He carries out experimental research in the fields of precision spectroscopy and quantum metrology, nonlinear optics, microwave photonics and ultrafast lasers. Diddams received the Ph.D. degree from the University of New Mexico in 1996. From 1996 through 2000, he did postdoctoral work at JILA, NIST and the University of Colorado. Subsequently, Diddams was a Research Physicist, Group Leader, and Fellow at NIST (the National Institute of Standards and Technology). In 2022 he transitioned to his present position where he also assumed the role of Faculty Director of the Quantum Engineering Initiative in the College of Engineering and Applied Science. As a postdoc Diddams built the first optical frequency combs in the lab of Nobel laureate John Hall, and throughout his career, he has pioneered the use of these tools for optical clocks, tests of fundamental physics, novel spectroscopy, and astronomy. His research has been documented in more than 750 peer-reviewed publications, conference papers, and invited talks. The work of Professor Diddams and his research group has been recognized by multiple awards. These include the Distinguished Presidential Rank Award, the Department of Commerce Gold and Silver Medals for revolutionizing the way frequency is measured, as well as the Presidential Early Career Award in Science and Engineering (PECASE), the OPTICA C.E.K. Mees Medal, the IEEE Photonics Society Laser Instrumentation Award, and the IEEE Rabi award. He is a Fellow of OPTICA (formerly OSA), the American Physical Society, the IEEE, and a member of the US National Academy of Engineering.

Zoom Link
https://eu02web.zoom-x.de/j/61905632263?pwd=UTaAc2pFW307E79oqzW3OWVN67lRb4.1

Meeting-ID: 619 0563 2263
Kenncode: 885456
Further Information: https://mpl.mpg.de/de/events/termin/scott-diddams