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BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Canal UGR - ECPv6.15.5//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-ORIGINAL-URL:https://canalugr.si2.dev X-WR-CALDESC:Eventos para Canal UGR REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:Europe/Madrid BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20240331T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20241027T010000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=Europe/Madrid:20240405T110000 DTEND;TZID=Europe/Madrid:20240405T110000 DTSTAMP:20260614T174242 CREATED:20240404T125421Z LAST-MODIFIED:20240404T125421Z UID:449460-1712314800-1712314800@canalugr.si2.dev SUMMARY:Seminario "Correlation constraints and the Bloch geometry of two qubits" DESCRIPTION:Seminario a cargo de Simon Morelli (Basque Centre for Applied Mathematics). \nResumen: The quantum marginal problem investigates the compatibility of the eigenvalues of the local and global states of a multipartite quantum system. It is a fundamental problem in quantum information for which the solution is only known for simple cases. We investigate a simpler question of the same flavour: Given the purities of the local states of a multipartite system\, what is the maximum purity the global state can achieve? We derive a new inequality that holds for bipartite systems of arbitrary dimensions and gives a complete solution for two qubits. Together with previous findings\, this result gives rise to a new representation of the quantum state space – the Bloch ball – of two qubits. We show that this 3-dimensional visualization has various interesting properties regarding geometry and argue why it indeed captures many relevant properties of the full\, high-dimensional\, state space. Finally we extend this solution to three-qubit states\, where we derive tight inequalities on the two- and three-body correlations compatible with a pure state. \nEl seminario es accesible para los estudiantes de grado\, a los que recomendamos encarecidamente que asistan. Para aquellos que no puedan asistir\, también hemos configurado una reunión de Google donde el seminario se transmitirá en vivo. \n\n\nFecha: Viernes\, 5 de abril de 2024\nLugar: Laboratorio de Fïsica Computacional\, Dept de Electromagnetismo y Física de al Materia\, Planta Baja\, Facultad de Ciencias (junto al péndulo gigante)\nHorario: 11:00 h\nOrganiza: Grupo de Termodinámica y Computación Cuántica\nMás información: https://ic1.ugr.es/eventos/wp/qjc/ URL:https://canalugr.si2.dev/evento/seminario-correlation-constraints-and-the-bloch-geometry-of-two-qubits/ LOCATION:Facultad de Ciencias\, Campus Universitario de Fuentenueva\, Granada\, Granada\, 18071\, España CATEGORIES:Ciencias,Conferencias, seminarios, divulgación científica ATTACH;FMTTYPE=image/png:https://canalugr.si2.dev/wp-content/uploads/2023/09/Post-Instagram-Musica-en-directo.png GEO:37.1838696;-3.6056272 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Facultad de Ciencias Campus Universitario de Fuentenueva Granada Granada 18071 España;X-APPLE-RADIUS=500;X-TITLE=Campus Universitario de Fuentenueva:geo:-3.6056272,37.1838696 END:VEVENT END:VCALENDAR