This research demonstrates a quantum frequency comb using an on-chip amplifier, indicating noise reduction.
We present the first bright amplitude-squeezed frequency comb using an on-chip Si 3 N 4 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.
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Shen et al. (2025) studied this question.
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