Kharkiv Quantum Seminar: 2024 April 9, 12:00 (EEST)

Experimental Quantum Electrodynamics

Denis Seletskiy

(Polytechnique Montreal, Canada)

Traditional approaches to quantum optics are rooted in the reciprocal, frequency-momentum space. In this talk, I will discuss recent advances toward sub-cycle quantum optics, where, instead, quantum fields are accessed in a localized region of space-time [1-2]. Both regimes will be compared side-by-side to contrast the advantages of each approach, with a particular emphasis on quantum sensing proposals [3-5] in the mid-infrared frequency range.

In the concluding part of the talk, I will summarize recent advances in producing few-cycle bright one- and two-mode squeezed vacuum states in a single few-cycle spatio-temporal mode with macroscopic photon occupation [6]. Such capabilities are poised to unlock a new era of (extreme) nonlinear quantum optics in the attosecond regime [7].

[1] C. Riek et al.; Science 350, 420-423 (2015)[2] I-C. Benea-Chelmus et al.; Nature 568, 202-206 (2019)[3] S. Virally, P. Cusson, DVS; Phys. Rev. Lett. 127, 270504 (2021)[4] S. Gündoğdu et al; Laser Phot. Rev. 17, 2200706 (2023)[5] S. Onoe, S. Virally, DVS; arXiv:2307.13088 (2023)[6] P. Cusson, S. Virally, DVS; IRMMW-THz Conference, paper Th-PM2-5-7 (2023)[7] 2023 Nobel Prize in Physics: Pierre Agostini, Ferenc Krausz and Anne L'Huillier. Experimental methods that generate attosecond pulses for studying electron dynamics in matter.