Non-Gaussian state generation by multi-photon subtraction at the telecommunication wavelength
Mamoru Endo, Ruofan He, Tatsuki Sonoyama, Kazuma Takahashi, Takahiro Kashiwazaki, Takeshi Umeki, Sachiko Takasu, K. Hattori, Daiji Fukuda, Kosuke Fukui, Kan Takase, Warit Asavanant, Jun–ichi Yoshikawa, Akira Furusawa · 2023
Non-Gaussian quantum states were generated by photon subtraction of up to four photons from a squeezed light at 1545.32 nm. The Wigner negativity and the parity change with the subtracted photon number were directly observed.