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## UMR 5672

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# Dissipative critical phenomena

Fabrizio MINGANTI (Ecole Polytechnique Fédérale de Lausanne)
When Dec 02, 2021 from 02:00 to 03:00 amphithéâtre Schrödinger Fabrizio MINGANTI vCal iCal

# Fabrizio MINGANTI (Ecole Polytechnique Fédérale de Lausanne)

Abstract:

Dissipation is often regarded as an obstacle to the realization of quantum technology. However, if properly controlled and engineered, dissipative processes can be harnessed for technological advantages. The purpose of this talk is to discuss some uncanny critical phenomena emerging in open quantum systems, using the formalism of the Lindblad master equation and of the Liouvillian superoperator [1]. In particular, I will then discuss peculiar phenomena occurring in dissipative systems, either related to the emergence of peculiar multistability [2], to spontaneous symmetry breaking [3], and to $\mathcal{PT}$ symmetry simulations [4]. I will also briefly discuss how dissipative critical systems can bring an advantage to metrological protocols [5].

[1] FM, A. Biella, N. Bartolo, and C. Ciuti, Phys. Rev. A 98, 042118 (2018)
[2] FM, I. I. Arkhipov, A. Miranowicz, and F. Nori, arXiv:2103.05625 (accepted in PRR)
[3] FM, I. I. Arkhipov, A. Miranowicz, and F. Nori, arXiv:2110.11902 (accepted in NJP)
[4] I. I. Arkhipov, FM, arXiv:2110.15286
[5] R. Di Candia, FM, K. V. Petrovnin, G. S. Paraoanu, S. Felicetti, arXiv:2107.04503