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X-WR-CALDESC:Veranstaltungen für QVLS | Quantum Valley Lower Saxony
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20240203
DTEND;VALUE=DATE:20240209
DTSTAMP:20260526T042709
CREATED:20231214T220034Z
LAST-MODIFIED:20231214T220034Z
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SUMMARY:"Frontiers of Quantum Mechanics” Physics Winter School
DESCRIPTION:Throughout recent decades quantum physics has seen dramatic developments\, driven by new theoretical ideas\, advanced experiments and new applications. Today\, quantum physics is the most basic and best theory of nature we have\, and many ideas that have long been regarded as mere thought experiments beyond any hope of realization\, nowadays have become procedures and observed phenomena in the lab. \nThe school on „Frontiers of quantum mechanics“ will highlight the foundations of quantum mechanics as well as applications as quantum sensing\, imaging and metrology at the quantum limit. We will discuss the interface of quantum physics to concepts of space-time\, to the macroscopic world\, to quantum materials as well as modern chemistry with relevance in biology. \nReview lectures will thus provide a broad overview over some highlights of recent science. Networking among the students will be fostered in poster sessions\, scientific speed dating sessions and in an excursion. \nRegistration is required since the seating capacity is limited and we want to admit a fair mix of topics\, countries\, age-classes\, gender etc.\nThe final selection of attendees will be communicated on the 4th of December 2023 to allow ample time for your travel plans.\nWe are pleased to announce an exciting educational and research program with enlightening speakers. \nWinter School Lecturers:  \n\nCaslav Brukner\, University of Vienna\nYiwen Chu\, ETH Zürich\nMarkus Gräfe\, Technical University Darmstadt\nMichèle Heurs\, Leibniz University Hannover\nPeter Hore\, University of Oxford\nChristian Lisdat\, PTB Braunschweig\nTilman Pfau\, University of Stuttgart\nHendrik Ulbricht\, University of Southampton\n\nThe covered topics will include: \n\nFoundations of QM\nQM as resource for high precision\nQM as resource for non-classicality\nQM as a universal theory
URL:https://qvls.de/event/frontiers-of-quantum-mechanics-physics-winter-school/
LOCATION:Niedersachsen
CATEGORIES:Bildung
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DTSTART;TZID=Europe/Berlin:20240212T110000
DTEND;TZID=Europe/Berlin:20240212T120000
DTSTAMP:20260526T042709
CREATED:20240208T130510Z
LAST-MODIFIED:20240208T130510Z
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SUMMARY:Lecture: Dynamical correlations and order in twisted bilayer graphene\, Dr. Gautam Rai
DESCRIPTION:Hosted by the Institute for Solid State Physics of the Leibniz University of Hannover\, Dr. Gautam Rai (University of Hamburg) has been invited by Prof. Dr. Rolf Haug to hold a lecture on the dynamical correlations and order in twisted bilayer graphene. \nAbstract: \nDynamical correlations and long-range order both play a crucial role in shaping the low-temperature phase diagram of magic-angle twisted bilayer graphene. We use dynamical mean-field theory (DMFT) on the topological heavy Fermion model of twisted bilayer graphene—with [1] and without [1\,2] symmetry-breaking—to study this interplay in the absence of strain. We find that a host of puzzling experimental observations from transport\, thermodynamic\, and spectroscopic experiments are explained by three central phenomena: (i) the formation of local spin and valley isospin moments\, (ii) the ordering of these moments around 10K\, and (iii) a cascadic redistribution of charge between light and heavy carriers upon doping. At integer fillings\, there is a depletion of spectral weight in the symmetric state\, and robust insulating gaps in the ordered phases. Upon doping away from integer fillings\, we find an insulator-to-metal transition into a bad (good) metal above (below) the ordering temperature. This order-facilitated coherence is the microscopic mechanism behind the observed isospin Pomeranchuk effect. Further doping induces charge transfer such that\, once between neighbouring integer fillings\, light carriers are emptied and heavy carriers are populated. The charge reshuffling is associated with doping-induced Lifshitz transitions and variations of the electronic compressibility ranging from nearly incompressible to negative. Our findings highlight the essential role of charge transfer\, hybridization and ordering in shaping the electronic excitations and thermodynamic properties in twisted bilayer graphene.
URL:https://qvls.de/event/lecture-dynamical-correlations-and-order-in-twisted-bilayer-graphene-dr-gautam-rai/
LOCATION:Niedersachsen
CATEGORIES:Forschung
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240215T150000
DTEND;TZID=Europe/Berlin:20240215T160000
DTSTAMP:20260526T042709
CREATED:20240208T143336Z
LAST-MODIFIED:20240208T143611Z
UID:10002138-1708009200-1708012800@qvls.de
SUMMARY:QFIRS Seminar
DESCRIPTION:QuantumFrontiers International Research School (QFIRS) invites you to a QFIRS seminar. They have members from various scientific backgrounds in QFIRS. This seminar aims to learn broader topics involved in QuantumFrontiers science. \nTitle\nControl of point defect density in GaInN/GaN quantum wells: The underlayer as a diffusion barrier\, regardless of its composition. \nAbstract\nWelcome to explore one important mechanism that affects the point defect density in the active region of light-emitters. This talk is aimed at presenting evidences for point defect diffusion\, and hence how to control the defect density in GaInN/GaN quantum wells by using proper growth conditions. Thus\, it offers a new perspective on the reduction of defects\, allowing further development and design of more efficient light-emitting nanostructures. \nSpeaker\nRodrigo de Vasconcellos Lourenço (https://www.quantumfrontiers.de/en/current/news/news-details/news/best-student-award-for-rodrigo-de-vasconcellos-lourenco) \nPlace\nAEI seminar room 103
URL:https://qvls.de/event/qfirs-seminar/
LOCATION:Max Planck Institute for Gravitational Physics\, Callinstr. 38\, Hannover\, 30167\, Germany
CATEGORIES:Bildung,DE
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20240226
DTEND;VALUE=DATE:20240301
DTSTAMP:20260526T042709
CREATED:20240208T133616Z
LAST-MODIFIED:20240208T133616Z
UID:10002136-1708905600-1709251199@qvls.de
SUMMARY:QVLS @ the Mobile World Congress 2024
DESCRIPTION:QVLS will be joining the Quantum Flagship booth again this February. \nIn 2023\, MWC drew over 60\,000 visitors from 160+ countries\, eager to explore and invest in innovative technologies. The European Quantum Zone\, led by the Quantum Flagship\, showcased 8 companies and 3 projects\, and hosted Quantum Coffee Talks\, a platform to present products and engage with the audience\, attracting visitors like EU Commissioner Thierry Breton.
URL:https://qvls.de/event/qvls-the-mobile-world-congress-2024/
LOCATION:MWC\, Fira Gran Via\, Barcelona\, Spain
CATEGORIES:Industrie
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