Innovative approach achieves over 3 dB modulation in photonic devices, suggesting improved energy efficiency.
By leveraging exceptional point nonlinearity in a PT-symmetric directional coupler, we exploited the unconventional loss-transmission relation, achieving over 3 dB modulation and 100-fold energy reduction, indicating a large step toward highly energy-efficient photonic devices.
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Wu et al. (2025) studied this question.
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