Theoretical seminar | 25 October 2023

The content of the seminar is based on the speaker's dissertation. The first part of the talk is focused on novel possibilities of quantum noise squeezing in silica fibers and special tellurite and chalcogenide fibers with huge Kerr nonlinearity. For instance, the generation of multiphoton states of 2-micron 10-W class CW light with squeezed quantum fluctuations stronger than 15 dB in chalcogenide and tellurite fibers is proposed and demonstrated theoretically. The second part of the talk is dedicated to the development of a novel simple, efficient, noise-tolerant algorithm for ultrashort pulse reconstruction based on the measurements of three spectra: initial one and two self-phase spectra transformed in a Kerr fiber. Advantages of the algorithm are demonstrated numerically including the reconstruction of mid-IR ultrashort pulses.

Main paper/arXiv, related to the seminar, and other references

1. A.V. Andrianov, N.A. Kalinin, A.A. Sorokin, E.A. Anashkina, L.L. Sanchez-Soto, J.F. Corney, G. Leuchs, Optimizing the generation of polarization squeezed light in nonlinear optical fibers driven by femtosecond pulses, Optics Express 2023, 31, 765-773.
2. N. Kalinin, T. Dirmeier, A.A. Sorokin, E.A. Anashkina, L.L. Sánchez-Soto, J.F. Corney, G. Leuchs, A.V. Andrianov, Quantum-enhanced interferometer using Kerr squeezing. Nanophotonics 2023,12 2945-2952.
3. A.A. Sorokin, G. Leuchs, J.F. Corney, N.A. Kalinin, E.A. Anashkina, A.V. Andrianov, Towards quantum noise squeezing for 2-micron light with tellurite and chalcogenide fibers with large Kerr nonlinearity. Mathematics 2022, 10, 3477
4. Sorokin A. A., A.V. Andrianov, E.A. Anashkina, Numerical study of mid-IR ultrashort pulse reconstruction based on processing of spectra converted in chalcogenide fibers with high Kerr nonlinearity, Fibers 2022, 10, P. 81.
5. E. A. Anashkina, A. A. Sorokin, G. Leuchs, A. V. Andrianov, Quantum noise squeezing of CW light in tellurite glass fibres. Results in Physics 2021, 30, 104843