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SUMMARY:The Link between Uncertainty Relations and Non-Locality - Marco To
 mamichel (ETH Zurich)
DTSTART:20120209T141500Z
DTEND:20120209T151500Z
UID:TALK35410@talks.cam.ac.uk
CONTACT:Paul Skrzypczyk
DESCRIPTION:Two of the most intriguing features of quantum physics are the
  uncertainty principle and the occurrence of non-local correlations. The u
 ncertainty principle states that there exist pairs of non-compatible measu
 rements on quantum systems such that their outcomes cannot be simultaneous
 ly predicted by any observer. Non-local correlations of measurement outcom
 es at different locations cannot be explained by classical physics\, but a
 ppear in quantum mechanics in the presence of entanglement. I will show th
 at these two essential properties of quantum mechanics are quantitatively 
 related. Namely\, we provide an entropic uncertainty relation that gives a
  lower bound on the uncertainty of the binary outcomes of two measurements
  in terms of the maximum Clauser-Horne-Shimony-Holt value that can be achi
 eved using the same measurements. I will discuss an application of this un
 certainty relation to certify a quantum source using untrusted devices.
LOCATION:MR4\, Centre for Mathematical Sciences
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