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SUMMARY:Is Teleportation a (quantum) mystery? - Berry Groisman\, CQC\, Cam
 bridge
DTSTART:20061120T163000Z
DTEND:20061120T180000Z
UID:TALK5967@talks.cam.ac.uk
CONTACT:Jeremy Nicholas Butterfield
DESCRIPTION:Since its discovery quantum teleportation has often been seen 
 as a manifestation\, indeed the epitome\, of the very paradoxical and myst
 erious nature of quantum theory itself. It is commonly regarded as genuine
 ly quantum and essentially paradoxical. Although a common approach to tele
 portation amongst physicists nowadays is a somewhat operational one\, some
  researchers are making an effort to deflate the above views.\n         An
  excellent example is the article by C. Timpson from which we will start o
 ur discussion. According to Timpson the paradox of information transfer ta
 king place in teleportation is dissolved if one notices our tendency to re
 gard information as a thing or stuff\, thereby expecting that information 
 flows via a continuous spatio-temporal path. Timpson argues that this trea
 tment of information is incorrect.\n         We will continue by shifting 
 our attention to a classical analogue of teleportation and discussing its 
 various versions. Surprisingly for some people\, it will be demonstrated t
 hat the major features of teleportation that are often considered as genui
 nely quantum are shared by the classical versions. Therefore\, even if one
  considers teleportation as mysterious\, this mystery is a purely classica
 l one.\n         Finally\, I will present a special version of a quantum t
 eleportation protocol which is in a sense split into classical and quantum
  counterparts. This picture provides us with a unified picture of teleport
 ation in both domains.\n\nReferences:\nC. Timpson\, The Grammar of Telepor
 tation\, Brit. J. Phil. Sci. 57\, 587\n(2006)\;\nhttp://xxx.lanl.gov/PS_ca
 che/quant-ph/pdf/0509/0509048.pdf\;\nhttp://philsci-archive.pitt.edu/archi
 ve/00002438/\n\nL. Hardy\, Disentangling Nonlocality and Teleportation\, q
 uant-ph/9910028.\n
LOCATION:Meeting Room 14\, Centre for Mathematical Sciences
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