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CATEGORIES:CQIF Seminar
SUMMARY:The Link between Uncertainty Relations and Non-Loc
ality - Marco Tomamichel (ETH Zurich)
DTSTART;TZID=Europe/London:20120209T141500
DTEND;TZID=Europe/London:20120209T151500
UID:TALK35410AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/35410
DESCRIPTION:Two of the most intriguing features of quantum phy
sics are the uncertainty principle and the occurre
nce of non-local correlations. The uncertainty pri
nciple states that there exist pairs of non-compat
ible measurements on quantum systems such that the
ir outcomes cannot be simultaneously predicted by
any observer. Non-local correlations of measuremen
t outcomes at different locations cannot be explai
ned by classical physics\, but appear in quantum m
echanics in the presence of entanglement. I will s
how that these two essential properties of quantum
mechanics are quantitatively related. Namely\, we
provide an entropic uncertainty relation that giv
es a lower bound on the uncertainty of the binary
outcomes of two measurements in terms of the maxim
um Clauser-Horne-Shimony-Holt value that can be ac
hieved using the same measurements. I will discuss
an application of this uncertainty relation to ce
rtify a quantum source using untrusted devices.
LOCATION:MR4\, Centre for Mathematical Sciences
CONTACT:Paul Skrzypczyk
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