High-resolution tunable frequency beamsplitter enabled by an integrated silicon pulse shaper
Researchers created a high-resolution frequency beamsplitter using an integrated silicon pulse shaper and electro-optic modulators. They achieved near-ideal Hadamard gate performance with high fidelity, allowing for precise splitting ratios across 2–5 GHz frequency spacings. This scalable platform enables tunable quantum photonics and offers significant improvements in spectral resolution over previous methods.