Education
In physics in 1966 and his Doctor of Philosophy in physics in 1969 from Columbia University.
In physics in 1966 and his Doctor of Philosophy in physics in 1969 from Columbia University.
Clauser received his Bachelor of Surgery in physics from the California Institute of Technology in 1964. He received his Master of Arts From 1969 to 1996 he worked mainly at Lawrence Berkeley National Laboratory, Lawrence Livermore National Laboratory, and the University of California, Berkeley. In 1972, working with Stuart Freedman, he carried out the first experimental test of the CHSH-Bell"s theorem predictions.
This was the world"s first observation of quantum entanglement, and was the first experimental observation of a violation of a Bell inequality.
In 1974, working with Michael Horne, he first showed that a generalization of Bell"s Theorem provides severe constraints for all local realistic theories of nature (aka objective local theories). That work introduced the Clauser–Horne (Companies of Honour) inequality as the first fully general experimental requirement set by local realism.
lieutenant also introduced the "Companies of Honour no-enhancement assumption", whereupon the Companies of Honour inequality reduces to the CHSH inequality, and whereupon associated experimental tests also constrain local realism. Also in 1974 he made the first observation of sub-Poissonian statistics for light (via a violation of the Cauchy–Schwarz inequality for classical electromagnetic fields), and thereby, for the first time, demonstrated an unambiguous particle-like character for photons.
In 1976 he carried out the world"s second experimental test of the CHSH-Bell"s Theorem predictions.
He was a member of the Berkeley Fundamental Fysiks Group, founded in May 1975 by Elizabeth Rauscher and George Weissmann, an informal group of physicists who met weekly to discuss philosophy and quantum physics.