Johannes Gutenberg University Mainz
University of California, Berkeley

报告摘要:
In zero- to ultralow-field (ZULF) NMR, one does not need magnets in some or all of the three stages of an experiment: polarization, encoding, and detection. This unusual NMR modality has witnessed rapid development since the advent of compact and sensitive noninductive sensors, especially, atomic magnetometers that are now available commercially. We will discuss several recent ZULF NMR experiments carried out by our group and collaborators, demonstrating applications in areas as diverse as searches for beyond-the-standard-model particles and interactions, monitoring chemical reaction dynamics in highly inhomogeneous samples within metal catalytic reactors, and detection of breaking down of membranes of biological cells as a result of chemotherapy. ZULF NMR may be combined with hyperpolarization and radioactive detection overcoming the sensitivity limitations. Remarkably, a wide variety of hyperpolarization techniques (including dynamical nuclear polarization, photochemically and parahydrogen induced polarization) are being used in conjunction with ZULF NMR.

报告人简介：
Dmitry Budker studied physics at the Novosibirsk State University, graduating in 1985 with an Honors Diploma and obtained his PhD from the University of California at Berkeley in 1993, his thesis winning the 1994 Award of the American Physics Society for the best Thesis in Atomic, Molecular, and Optical Physics. He has been on the faculty of Department of Physics, University of California, Berkeley since 1995. From 2014, he is a University Professor at the Johannes Gutenberg University and a Matter-Antimatter Section Leader of the Helmholtz Institute in Mainz, Germany. He is a Fellow of the American Physical Society, a recipient of the 2021 Norman F. Ramsey Prize in Atomic, Molecular and Optical Physics and in Precision Tests of Fundamental Laws and Symmetries, and a co-recipient of the 2021 Erwin Schr？dinger Award of the Helmholtz Association for his work in nuclear magnetic resonance. He is an author of over 300 research articles, including five books. Current research is focused on testing fundamental symmetries of nature in experiments that utilize the methods of atomic, molecular, and optical physics, including development of all-optical sensors based on atomic vapors and color centers in diamond, zero- and ultralow-field nuclear magnetic resonance (ZULF-NMR), searches for dark matter and dark energy constituents (GNOME, CASPEr), physics of sodium laser guide stars, and measurement of atomic parity violation and other symmetry tests in atoms, molecules and ions.

联系人：胡江平 研究员    （8264 9818）
　　　　郑慧婕 副研究员（8264 9211）