Name : Professor Dr.John Francis Clauser

Profession : Experimental Physicist

 

Academic Qualification : M.A. and PhD

Subject : Physics

 

Educational institution :   

PhD in Physics-1969, Columbia University, New York, USA

M.A. in Physics-1966, Columbia University, New York, USA

B.S. in Physics-1964, California Institute of Technology, Pasadena, California, USA

 

Profession Institution : 

1969~1975, Postdoctoral Research Associate, Lawrence Berkeley National Laboratory and University of California, Berkeley, California, USA

1975~1986, Research Physicist and Group Leader, 2XIIB Experment, Lawrence Livermore National Laboratory, Livermore, California, USA

1986~1987, Senior Scientist, Science Applications Iternational Corporation

1988~1989, Consultant and Inventor, J.F. Clauser and Associates

1990~1997, Research Physicist, University of California, Berkeley, California, USA

1997~, Research Physicist, Consultant and Inventor, J.F. Clauser and Associates, Walnut Creek, California

 

Award : 

Wolf Prize in Physics-2010

Thompson-Reuters Cltation Laureate in Physics-2011

Nobel Prize in Physics-2022 

Novel Prize motivation : "for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science"

 

Author : 

Early history of J.S. Bell's theorem.

Oral history interview with John Francis Clauser, 2002 May 20, 21 & 23

 

Father's Name : Francis H Clauser

Father’s Profession: Professor of Aeronautical Engineer

Position : Chaired the Aeronautics Department

Institution : Johns Hopkins University

 

Mother's Name : Catharine McMillan

Mother's Profession : Librarian, Caltech

 

John Francis Clauser, 1951 Nobel laureate in Chemistry, is the nephew of Edin MacMillan.

 

Siblings : 

 

Spouse Name : 

Spouse Profession : 

 

Children : Two daughter

 

Place of Birth : 1 December 1942 Pasadena, California, United State of America

 

Work: One of the most remarkable traits of quantum mechanics is that it allows two or more particles to exist in what is called an entangled state. What happens to one of the particles in an entangled pair determines what happens to the other particle, even if they are far apart. In 1972, John F Clauser conducted groundbreaking experiments using entangled light particles, photons. This and other experiments confirm that quantum mechanics is correct and pave the way for quantum computers, quantum networks and quantum encrypted communication.

 

About John F. Clauser :

John Clauser  received his B.S. in physics from the California Institute of Technology in 1964, his M.A. in physics in 1966 and Ph.D. in physics in 1969 from Columbia University. From 1969 to 1996 he worked at Lawrence Berkeley National Laboratory, Lawrence Livermore National Laboratory, and the University of California, Berkeley. John was awarded the Wolf Prize in Physics in 2010, together with Alain Aspect and Anton Zeilinger for their observations of non-local quantum entanglement and experimental tests of Local Realism. In 1969, with Michael Horne, Abner Shimony, and Richard Holt, inspired by theoretical results by John Bell, he proposed the first test of local hidden variable theories, and provided the first experimentally testable CHSH-Bell's Theorem prediction for these theories -- the Clauser-Horne-Shimony-Holt (CHSH) inequality. In 1972, working with Stuart Freedman, he carried out the first experimental test of the CHSH inequality's prediction. This was the world's first observation of non-local quantum entanglement, and was the first experimental observation of a violation of a Bell inequality. In 1976 he carried out the world's second experimental test of the CHSH inequality prediction. In 1974, working with Michael Horne, he formulated the theory of Local Realism as a generalization of local hidden-variable theories, and first showed that a generalization of Bell's Theorem provides severe constraints for all Local Realistic theories of nature. That work introduced the Clauser–Horne (CH) inequality as the first fully general experimental requirement set by Local Realism. It has only recently (2013) been tested experimentally. He also introduced the "CH no-enhancement assumption", whereupon the CH inequality reduces to the CHSH inequality, and whereupon associated experimental tests also constrain Local Realism. 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 first experimentally proved that photons can behave like localized particles and not like brief pulses of electromagnetic radiation. In 1987-1991 he proposed (and patented) atom interferometers as useful ultra-sensitive inertial and gravity sensors. In 1992, with Matthias Reinsch, he first deduced the number-theoretic properties of the fractional Talbot effect, and invented the Talbot-Lau interferometer. In 1990-1997, with Shifang Li, he first used Talbot-Lau interferometry to build an atom interferometer. In 1998 he invented and patented use of the Talbot-Lau interferometry for "Ultrahigh Resolution Interferometric X-ray Imaging". This invention, in turn, allows x-ray phase-contrast medical imaging of soft tissue.

 

John Francis Clauser

817 Hawthorne Drive Walnut Creek, CA 94596-6112, USA

Phone : +1-925-939 9885

E-mail: bobbi_john@ifcbat.com / john@ifcbat.com

johnclauser.com

 

Professor Dr. John Francis Clauser's biography coming soon . . . . .