MIT 8.421 Atomic and Optical Physics I, Spring 2014 View the complete course: ocw.mit.edu/8-421S14 Instructor: Wolfgang Ketterle In this lecture, the professor reviewed Landau-Zener problem; discussed density matrix formalism for arbitrary two-level systems; and started the new chapter "Atoms". License: Creative Commons BY-NC-SA More information at ocw.mit.edu/terms More courses at ocw.mit.edu