Prof. Berge Englert, gave a lecture titled “Bohr's Complementarity” at AMSS on 20,November 2018.
Niels Bohr's principle of complementarity could be formulated in a technical way, which built on Hermann Weyl's and Julian Schwinger's legacy. The concept of pairwise complementary observables and their mutually unbiased bases were crucial ingredients. In addition to their fundamental role in quantum kinematics, mutually unbiased bases were important in various applications, including in particular quantum state estimation and other quantum information tasks.
Berge Englert graduated from the University of Tübingen, Germany, in 1981. After 40 months as a post-doctoral researcher at UCLA, under Julian Schwinger's supervision, he returned to Germany in 1985 and spent the next ten years as a non-tenured junior faculty at the University of Munich. After seven more years as "physicists at large" with longer stays in various places, including Paris, France, Vienna, Austria, and College Station, Texas, he relocated to the National University of Singapore (NUS) in 2002, where he is currently a Principal Investigator at the Centre for Quantum Technologies, a Professor in the Department of Physics, and a deputy director of MajuLab. His research of almost four decades touched upon many aspect of quantum physics, including many-fermion systems, quantum optics, complementarity and quantitative wave-particle duality, and quantum information. His honors include the National Science Award (Singapore, co-recipient 2006), the Provost Chair in Science at NUS (2009-2012), and Fellowship of the American Physical Society (2015). He has published a series of undergraduate texts based on lecture notes prepared for courses at NUS (classical mechanics, quantum mechanics, electrodynamics, and -- forthcoming -- statistical mechanics).