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DTSTART;TZID=Europe/Madrid:20260923T113000
DTEND;TZID=Europe/Madrid:20260923T123000
DTSTAMP:20260918T153256
CREATED:20260917T073455Z
LAST-MODIFIED:20260917T073455Z
UID:25614-1790163000-1790166600@www.ift.uam-csic.es
SUMMARY:Quantum Information Journal Club: "Quantum information transitions and the breakdown of non-Abelian topological quantum memories"
DESCRIPTION:Speaker: Pablo Sala (ift)\n\nTitle: “Quantum information transitions and the breakdown of non-Abelian topological quantum memories”\n\nVenue&Time: Gray Room 3 / 11:30\n\nAbstract: How much noise can a system tolerate before encoded quantum information becomes irrecoverable? This question connects quantum error correction to the stability of quantum matter. In this talk\, I will explore the transition between a recoverable and an irrecoverable phase when a quantum many-body system is subject to symmetry-preserving noise. For Abelian symmetries\, this reconstruction becomes essentially classical: local syndrome data captures the relevant information and maps to familiar statistical-mechanics decoding problems. For non-Abelian symmetries\, the situation is qualitatively different. The noisy state retains hidden fusion information that cannot be read from local syndromes alone. This leads naturally to a hierarchy of measurement protocols\, where increasingly nonlocal measurements reveal progressively more of the fusion structure. I will describe how this perspective gives a framework for comparing reconstruction thresholds and developing error correction protocols for the closely related problem of non-Abelian topological quantum memories.
URL:https://www.ift.uam-csic.es/event/quantum-information-journal-club-quantum-information-transitions-and-the-breakdown-of-non-abelian-topological-quantum-memories/
LOCATION:Gray Room 3\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
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