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SUMMARY:Topical Seminar: Multiparameter quantum metrology requires genuine
  high-dimensional entanglement
DTSTART;VALUE=DATE-TIME:20260925T090000Z
DTEND;VALUE=DATE-TIME:20260925T100000Z
DTSTAMP;VALUE=DATE-TIME:20260924T205051Z
UID:indico-event-8764@indico.ific.uv.es
DESCRIPTION:We establish uncertainty-like relations that directly bound th
 e\nsensitivity of physical parameters in terms of entanglement\, revealing
 \nthat the maximum achievable sensitivity is fundamentally limited by\nhow
  much entanglement the system possesses. Entanglement—the\nnonclassical 
 correlations that link quantum systems—is a key\nresource for quantum te
 chnologies\, including precision measurements\,\nyet a central question ha
 s been how it constrains sensitivity\, that\nis\, how sharply a quantum st
 ate responds to small changes in physical\nparameters. Our framework answe
 rs this question and further\ndemonstrates that while simple\, two-level e
 ntanglement is sufficient\nfor optimal estimation of a single parameter\, 
 genuinely\nhigher-dimensional entanglement becomes necessary when estimati
 ng\nseveral parameters simultaneously. These findings deepen the\nconnecti
 ons between quantum metrology and entanglement theory\, with\npotential ap
 plications in multiparameter sensing and the\ncharacterization of complex 
 quantum systems.\n\nhttps://indico.ific.uv.es/event/8764/
LOCATION:Campus Burjassot 4-4-4426 - Seminari Física Teòrica
URL:https://indico.ific.uv.es/event/8764/
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