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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:/combinatorics-and-optimization/events/tutte-colloq
 uium-hao-hu
SUMMARY:Tutte Colloquium - Hao Hu
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Robust Interior Point Methods for Key Rate 
 Computation in\nQuantum Key Distribution\n\nSpeaker:\n Hao Hu\n\nAffliliat
 ion:\n University of À¶Ý®ÊÓƵ\n\nZoom:\n Contact Emma Watson\n\nABSTRACT:
 \n\nWe study semidefinite programs for computing the key rate in finite\nd
 imensional quantum key distribution (QKD) problems. Through facial\nreduc
 tion\, we derive a semidefinite program which is robust and\nstable in th
 e numerical computation. Our program avoids the\ndifficulties for current
  algorithms from singularities that arise due\nto loss of positive definit
 eness. This allows for the derivation of an\nefficient Gauss-Newton interi
 or point approach. We provide provable\nlower and upper bounds for the har
 d nonlinear semidefinite programming\nproblem.\n 
DTSTAMP:20250523T180612Z
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