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DTSTART;TZID=America/Toronto:20230426T110000
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URL:https://uwaterloo.ca/institute-for-quantum-computing/events/quantum-mat
 ters-seminar-series-no-you-have-not-discovered
LOCATION:QNC - Quantum Nano Centre 200 University Avenue West QNC 1201 Wate
 rloo ON N2L 3G1 Canada
SUMMARY:Quantum Matters Seminar Series: No\, you have not discovered a Majo
 rana\nFermion
CLASS:PUBLIC
DESCRIPTION:NO\, YOU HAVE NOT DISCOVERED A MAJORANA FERMION\n\nAbstract: Is
  what I tell myself. There was a time when I thought I may\nhave discovere
 d it\, others did too. Around 2012 several groups\nincluding ours found ev
 idence of these quantum excitations in\nelectrical circuits containing nan
 owires of semiconductor covered by a\nsuperconductor. The dramatic signatu
 res were peaks in conductance that\nappeared under conditions expected fro
 m theory for Majorana modes\,\nwhich are their own anti-modes and may poss
 ess non-Abelian properties.\nBut a few years later\, similar features in t
 he data were identified\ndue to an interesting\, but a more mundane effect
  - which we call\ntrivial states such as Andreev bound states. Over time m
 ore and more\ndata pointed at the trivial and not at the exotic explanatio
 n. But\nbecause Majorana claims kept coming\, this led to some digging and
  even\nretractions. What we learned after 10 years is that we have a much
 \nbetter handle on what effects show up in these nanowires\, which\npositi
 ons us well for the ultimate Majorana discovery which we should\nbe able t
 o tell apart from all the non-Majorana things we saw. The\nsecond lesson w
 e learned is that materials quality of device\nconstituents\, superconduct
 ors and semiconductors\, as well as how\nsamples are fabricated - are the 
 make-or-break factors for making this\nhappen. So while  I cannot report 
 an exciting physics discovery\, I\ncan walk you through the scientific pro
 cess that took place\, a 10-year\nevent of independent value which taught 
 me how to do science better.
DTSTAMP:20260407T135559Z
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