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SUMMARY:On Superposition\, Interference and Feynman paths - Urbasi Sinha
DTSTART:20180521T130000Z
DTEND:20180521T140000Z
UID:TALK102196@talks.cam.ac.uk
CONTACT:Adrian Kent
DESCRIPTION:The superposition principle forms the heart of all modern appl
 ications and properties of quantum\nmechanics such as quantum entanglement
  and quantum computing. However\, its usual application\nto slit based int
 erference experiments has caveat in both optics and quantum mechanics wher
 e it is\noften incorrectly assumed that the boundary condition represented
  by slits opened individually is\nsame as them being opened together. In t
 heory work carried out over the last few years\, we have\nquantified the c
 orrection term in terms of the Sorkin parameter. In this talk\, we will re
 port\nthe first reported measurement of a deviation from the superposition
  principle in the microwave\ndomain using antennas as sources and detector
 s of the electromagnetic waves. This deviation\nis quantified through the 
 Sorkin parameter which can be as big as 6% in our experiment.\nMeasuring a
  non-zero Sorkin parameter not only gives experimental verification to the
  theoretical\npredictions about the deviation from the superposition princ
 iple in interference experiments\, it\nalso exemplifies an experimental sc
 enario in which non zero Sorkin parameter need not necessarily\nimply fals
 ification of Born rule for probabilities in quantum mechanics which has be
 en the basis for\nseveral experiments in recent years.
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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