Quantum stochastic model reveals significant linewidth squeezing in optical parametric oscillators, indicating potential for enhanced performance.
We develop a quantum stochastic model for optical parametric oscillators (OPOs) coupled to a two-mode-squeezed reservoir state and show that this configuration can significantly squeeze the linewidth of the OPO below the Schawlow-Townes linewidth.
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Zhao et al. (2025) studied this question.
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