BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Nonequilibrium quantum and statistical physics - ECPv4.9.9//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Nonequilibrium quantum and statistical physics X-ORIGINAL-URL:https://chaos.fmf.uni-lj.si X-WR-CALDESC:Events for Nonequilibrium quantum and statistical physics BEGIN:VTIMEZONE TZID:Europe/Ljubljana BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20210328T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20211031T010000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=Europe/Ljubljana:20210202T140000 DTEND;TZID=Europe/Ljubljana:20210202T153000 DTSTAMP:20240328T183606 CREATED:20210125T104646Z LAST-MODIFIED:20210125T104646Z UID:1106-1612274400-1612279800@chaos.fmf.uni-lj.si SUMMARY:Jaš Bensa: Fastest local entanglement scrambler\, multistage thermalization\, and a non-Hermitian phantom DESCRIPTION:We study random quantum circuits and their rate of producing bipartite entanglement\, specifically with respect to the choice of 2-qubit gates and the order (protocol) in which these are applied. The problem is mapped to a Markovian process and proved that there are large spectral equivalence classes. The optimal gate and the protocol that generates entanglement the fastest is identified. Relaxation towards the asymptotic thermal entanglement proceeds via a series of phase transitions in the local relaxation rate\, which are a consequence of non-Hermiticity. In particular\, non-Hermiticity can cause the rate to be either faster\, or\, even more interestingly\, slower than predicted by the matrix gap. This is caused by a many-body explosion of expansion coefficients due to non-orthogonality which can result in a ‘phantom’ eigenvalue and could be of interest in other non-Hermitian settings. \n* Jaš Bensa\, University of Ljubljana \nThe seminar will be online via Zoom (ID: 281 621 2459\, Password: 667124) \nhttps://uni-lj-si.zoom.us/j/2816212459?pwd=UUs5MDdTNmVzRkorRmc3ZFNZTzVKQT09 \n URL:https://chaos.fmf.uni-lj.si/event/jas-bensa-fastest-local-entanglement-scrambler-multistage-thermalization-and-a-non-hermitian-phantom/ LOCATION:Zoom END:VEVENT END:VCALENDAR