Observation of a bright squeezed quantum frequency comb in nanophotonics
Yichen Shen, Ping‐Yen Hsieh, Dhruv Srinivasan, Antoine Henry, Sashank Kaushik Sridhar, You-Chia Chang, Thomas A. Smith, Avik Dutt · 2025
We present the first bright amplitude-squeezed frequency comb using an on-chip Si3N4 optical parametric amplifier. We demonstrate 6 pairs of two-mode-squeezed states (12 qumodes) with a maximum 4 dB of directly detected quantum noise reduction.