BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Vladimir M. Stojanovic (TU Darmstadt) DTSTART:20211215T170000Z DTEND:20211215T180000Z DTSTAMP:20260423T024610Z UID:TQFT/47 DESCRIPTION:Title: Li e-algebraic aspects of quantum control: gate realization and W-to-GHZ stat e conversion\nby Vladimir M. Stojanovic (TU Darmstadt) as part of Topo logical Quantum Field Theory Club (IST\, Lisbon)\n\n\nAbstract\nIn this ta lk I will try to demonstrate the use of Lie-algebraic concepts in the quan tum control of interacting qubit arrays\, with examples from both operator (gate)- and state control. I will start from the basics of quantum contro l and briefly review the Lie-algebraic underpinnings of the concept of com plete controllability. I will then specialize to qubit arrays with Heisenb erg-type interactions\, summarizing the conditions for their complete cont rollability and showing a few examples of gate realization. The second par t of the talk will be devoted to a rather unconventional use of Lie-algebr aic concepts within a dynamical-symmetry-based approach to the determinist ic conversion between W- and Greenberger-Horne-Zeilinger (three-qubit) sta tes. The underlying physical system consists of three neutral atoms subjec t to several external laser pulses\, where the atomic ground- and a highly -excited Rydberg state play the role of the two relevant logical qubit sta tes.\n LOCATION:https://researchseminars.org/talk/TQFT/47/ END:VEVENT END:VCALENDAR