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X-WR-CALNAME:Institute of Mathematics and Informatics
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X-WR-CALDESC:Събития за Institute of Mathematics and Informatics
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DTSTART;TZID=Europe/Sofia:20210330T180000
DTEND;TZID=Europe/Sofia:20210330T193000
DTSTAMP:20260630T142358
CREATED:20210324T185435Z
LAST-MODIFIED:20210324T185539Z
UID:10378-1617127200-1617132600@math.bas.bg
SUMMARY:Семинар на секция “Математически основи на информатиката”
DESCRIPTION:Секция „МАТЕМАТИЧЕСКИ ОСНОВИ НА ИНФОРМАТИКАТА“ \nорганизира семинар по проект \n„Стратегии за подобряване на качеството на моделите\, намерени от алгоритми за машинно обучение с приложение към квантовата томография“. \nДоклад ще изнесат: \nВиолета Иванова-Ролинг и Никлас Ролинг\nна тема: \nQuantum state tomography as a numerical optimization problem\nАбстракт: We present a framework that formulates the quest for the most efficient quantum state tomography scheme as an optimization problem which can be solved numerically. This approach can be applied to a broad spectrum of relevant setups including measurements restricted to a subsystem. To illustrate the power of this method we present results for the six-dimensional Hilbert space constituted by a qubit-qutrit system\, which could be realized e.g. by the N-14 nuclear spin-1 and two electronic spin states of a nitrogen-vacancy center in diamond. Measurements of the qubit subsystem are expressed by projectors of rank three\, i.e.\, projectors on half-dimensional subspaces. For systems consisting only of qubits\, it was shown analytically that a set of projectors on half-dimensional subspaces can be arranged in an informationally optimal fashion for quantum state tomography\, thus forming so-called mutually unbiased subspaces. Our method goes beyond qubits-only systems and we find that in dimension six such a set of mutually-unbiased subspaces can be approximated with a deviation irrelevant for practical applications. \nСеминарът ще се проведе на 30 март (вторник) 2021 г. от 18:00 часа онлайн чрез Zoom. \nJoin Zoom Meeting\nhttps://us02web.zoom.us/j/89537593729?pwd=Wm9LYmhNeEZ5YlNkaGQvblNwMnlZdz09 \nMeeting ID: 895 3759 3729\nPasscode: 021763
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-problems-and-methods-related-to-coding-theory-3/
LOCATION:Zoom
CATEGORIES:Работен семинар,Редовен семинар
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