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Seminarium ISQI - Dr. Karol Gietka

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Harnessing virtual excitations and virtual squeezing in quantum metrology


Speaker: Dr. Karol Gietka (Institut für Theoretische Physik, Universität Innsbruck, Austria)

Date, Time: 10.04, 15:00 - 16:00

Location
hybrid meetnig (room 16), link (MSTeams) >>>

Squeezing of quantum states is a well-established technique for reducing quantum noise and enhancing measurement precision. In this talk, I will show that even virtual squeezing—emerging in strongly interacting systems—can serve as a powerful resource for quantum metrology. Focusing on the paradigmatic Dicke model, which describes the interaction between a collective spin ensemble and a single-mode electromagnetic field, I will present a method that leverages hybridized light-matter modes to enhance precision beyond classical limits. These findings reveal the metrological potential of virtual excitations and open new avenues for exploiting ultrastrong light-matter coupling in a wide range of quantum technologies.

https://isik.amu.edu.pl/seminars/dr-karol-gietka/