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SUMMARY:Robust Quantum Control for Quantum Information Systems - Kosut\, R
  (SC Solutions)
DTSTART:20140807T080000Z
DTEND:20140807T084000Z
UID:TALK53672@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Co-authors: Matthew Grace (Sandia National Laboratories)\, Con
 stantin Brif (Sandia National Laboratories)\, Hersch Rabitz (Princeton Uni
 versity) \n\n In a 1985 paper in Optics News entitled ``Quantum Mechanical
  Computers\,'' Richard Feynman described how a computer could be built upo
 n the mathematical principles of quantum mechanics. But he also heralded t
 he difficulties in an actual physical implementation: ``This computer seem
 s to be very delicate and these imperfections may produce considerable hav
 oc.'' This talk will describe our on-going efforts to alleviate the potent
 ial ``havoc'' by appealing to robust control design\, both model-based and
  data-based. The model-based approach relies on uncertainty modeling\, i.e
 .\, values of parameters and noise sources in the model are unknown but co
 ntained in bounded sets. Sequential convex programming (SCP) is used to fi
 nd controls which maximize fidelity despite the uncertainty. From an avail
 able set of input/observable pairs\, the same type of model is used to est
 imate fidelity as well as refine knowledge about uncertain parameters\, th
 ereby leading to a more robust control providing increased performance.\n 
 \n
LOCATION:Seminar Room 1\, Newton Institute
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