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SUMMARY:Photonic quantum information science and technologies - Prof. Jere
 my O'Brien\, Centre for Quantum Photonics\, University of Bristol
DTSTART:20111123T200000Z
DTEND:20111123T210000Z
UID:TALK33276@talks.cam.ac.uk
CONTACT:Rok Nezic
DESCRIPTION:he theory of quantum mechanics was developed at the beginning 
 of the twentieth century to better explain the spectra of light emitted by
  atoms. At the time\, many people believed that physics was almost complet
 ely understood\, with only a few remaining anomalies to be ‘ironed out
 ’. The full theory of quantum mechanics emerged as a completely unexpect
 ed description of nature at a fundamental level. It portrays a world that 
 is fundamentally probabilistic\, where a single object can be in two place
 s at once—superposition—and where two objects in remote locations can 
 be instantaneously connected—entanglement. These unusual properties have
  been observed\, and quantum mechanics remains the most successful theory 
 ever developed\, in terms of the precision of its predictions. Today\, we 
 are learning how to harness these surprising quantum effects to realize pr
 ofoundly new quantum technologies. This lecture will examine how single pa
 rticles of light—photons—are being used to develop secure communicatio
 n systems based on the laws of physics\, precision measurements using enta
 ngled light\, and information processors that promise exponentially greate
 r computational power for particular tasks.
LOCATION:Plant Sciences Lecture Theatre\, Downing Site
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