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  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1999),
  • paper QTuG8

Experimental realization of Popper's experiment

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Abstract

In early 1930’s, Karl Popper, a metaphysical realist, proposed a thought experiment to support his realistic interpretation of quantum mechanics, which shared the same goal of the EPR gedankenexperiment.1,2 Based on the same EPR two-particle entangled state, Popper asked: if the precise position of particle 2 is known due to the precise measurement of the position for its entangled twin particle 1, does particle 2 experience a greater uncertainty in its momentum? This question has been ignored for many years. One may not like Popper’s philosophy of quantum mechanics; however, his question is closely related to an important problem in recent “hot” applications: what one can predict for the remaining parts of an entangled state if one of the subsystems is measured alone?

© 1999 Optical Society of America

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