Raymer M, Polakos P. States, Modes, Fields, and Photons in Quantum Optics. Acta Phys. Pol. A [Internet]. 2023 Jun. 14 [cited 2024 Oct. 22];143(6):S28. Available from: https://appol.ifpan.edu.pl/index.php/appa/article/view/143_s28