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SUMMARY:The Physics of Can and Can't  - Professor Chiara Marletto
DTSTART:20211021T170000Z
DTEND:20211021T183000Z
UID:TALK164224@talks.cam.ac.uk
CONTACT:92260
DESCRIPTION:The theory of the universal quantum computer has brought us ra
 pid technological developments\, together with remarkable improvements in 
 how we understand quantum theory. There are\, however\, reasons to believe
  that quantum theory may ultimately have to be modified into a new theory:
  for instance\, it will have to be merged with general relativity\, to inc
 orporate gravity\; and some claim that it may be impossible to have quantu
 m effects beyond a certain macroscopic scale. So what lies ahead of quantu
 m theory\, and of the universal quantum computer? To shed some light on th
 ese questions\, we need a shift of logic in the way things are explained. 
 Specifically\, one can adopt the approach where the basic assumptions are 
 general principles about possible/impossible transformations\, rather than
  dynamical laws and initial conditions. This approach is called constructo
 r theory. I will describe its application to a handful of interconnected p
 roblems\, within information theory\, thermodynamics\, and even quantum gr
 avity. This ’Science of Can and Can’t' may be the first step towards t
 he ultimate generalization of the universal quantum computer\, which von N
 eumann called the 'universal constructor’.
LOCATION:https://forms.gle/2qkANTNhuZvReZ6AA
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