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Wolfgang Ketterle is a German-American physicist who was awarded the 2001 Nobel Prize in Physics for his experimental work on Bose-Einstein condensation. In 1995, Ketterle and his colleagues at the Massachusetts Institute of Technology (MIT) created the first Bose-Einstein condensate in a gas of rubidium atoms. Ketterle's work has helped to advance our understanding of the fundamental nature of matter and has opened up new possibilities for studying quantum phenomena.