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DTSTART:20210314T070000
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DTSTART:20201101T060000
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DTSTART;TZID=America/Toronto:20210423T153000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/tutte-colloq
 uium-hao-hu
SUMMARY:Tutte Colloquium - Hao Hu
CLASS:PUBLIC
DESCRIPTION:TITLE: Robust Interior Point Methods for Key Rate Computation 
 in\nQuantum Key Distribution\n\nSpeaker:\n Hao Hu\n\nAffliliation:\n Unive
 rsity of Waterloo\n\nZoom:\n Contact Emma Watson\n\nABSTRACT:\n\nWe study
  semidefinite programs for computing the key rate in finite\ndimensional q
 uantum key distribution (QKD) problems. Through facial\nreduction\, we de
 rive a semidefinite program which is robust and\nstable in the numerical 
 computation. Our program avoids the\ndifficulties for current algorithms 
 from singularities that arise due\nto loss of positive definiteness. This 
 allows for the derivation of an\nefficient Gauss-Newton interior point app
 roach. We provide provable\nlower and upper bounds for the hard nonlinear 
 semidefinite programming\nproblem.
DTSTAMP:20260406T163129Z
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