Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 65: Quantum Information (Miscellaneous)
Q 65.2: Vortrag
Freitag, 18. März 2022, 10:45–11:00, Q-H12
Engineering of Kerr squeezing of light — •Nikolay A. Kalinin1,2, Arseny A. Sorokin1,2, Thomas Dirmeier2,3, Elena A. Anashkina1,4, Gerd Leuchs1,2,3, and Alexey Andrianov1 — 1Institute of Applied Physics, RAS, Nizhny Novgorod, Russia — 2Max Planck Institute for the Science of Light, Erlangen, Germany — 3Department of Physics, Friedrich-Alexander-University Erlangen-Nürnberg, Germany — 4Advanced School of General and Applied Physics, Lobachevsky State University of Nizhny Novgorod, Russia
We report on a new experimental study and a modified set-up, allowing for reliably generating 5dB of two-mode Kerr squeezing. Manipulating the two-mode squeezed state using standard linear optic unitary transformations, we also demonstrate the enhancement of the sensitivity of an interferometer. In addition, we are studying different glasses with higher Kerr effect coefficient [A.A. Sorokin et al., Photonics 8, 226 (2021)]. Squeezing coherent states of light using the optical Kerr effect requires no phase matching condition. The effect is observable, if the incoming coherent light is intense enough, the interaction is long enough and losses are small enough. Therefore, experimental studies concentrated on optical waveguides, such as fibers of several meter length, using pulses in the soliton domain to enhance the overall effect. The Kerr nonlinear phase shift results in an elliptical distribution in phase space, tilted with respect to amplitude quadrature. Squeezing cannot be seen in intensity detection directly out of the waveguide, so that demonstrating sensitivity enhancement of an interferometer is challenging. (RFBR 19-29-11032; Megagrant 075-15-2021-633)