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Article #7272Quantum correlations and information transfer
From: Dale Atems
Date: Wed, 13 Jan 1993 02:50
Date: Wed, 13 Jan 1993 02:50
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Paul, there are two issues here as I see it: 1). Does one obtain the correct quantum correlations by using the singlet wave function before either particle is detected? For the spin-half case I get < (S1.a) (S2.b) > = -(hbar^2) a.b / 4 for arbitary unit vectors a and b, particles 1 and 2 in the (pre-detection) singlet state. Is this the correct answer or no? 2). Are the predictions of QM inconsistent with the assertion that the setting of the near polarizer *never* influences the outcome of the distant measurement? If this is what Eberhard claims to prove then I will read his derivation as soon as I can find the time. I suspect, rather, that the most can say for certain is that if QM is correct, the polarization states of the photons are incompletely determined until the measurements are made (a statement with which Bohr would have agreed decades ago), and that the correlations predicted by QM between distant measurements would *otherwise* imply such an influence. ------ Dale Atems Wayne State University, Detroit, MI Department of Physics and Astronomy atems@igor.physics.wayne.edu
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arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!usc!howland.reston.ans.net!spool.mu.edu!yale.edu!yale!gumby!destroyer!wsu-cs!igor.physics.wayne.edu!atemsShow Full Headers
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Newsgroups: sci.physics Path: arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!usc!howland.reston.ans.net!spool.mu.edu!yale.edu!yale!gumby!destroyer!wsu-cs!igor.physics.wayne.edu!atems From: atems@igor.physics.wayne.edu (Dale Atems) Subject: Quantum correlations and information transfer Message-ID: <1993Jan13.025034.12390@cs.wayne.edu> Sender: usenet@cs.wayne.edu (Usenet News) Organization: Wayne State University, Detroit, MI Date: Wed, 13 Jan 1993 02:50:34 GMT Lines: 25