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University of Twente Researchers Reduce Photonic Qubit Costs with Photon Filtering

University of Twente researchers, led by PhD candidate Frank Somhorst, have devised a photon‑filtering technique that merges multiple imperfect photons into a single, higher‑quality photon. The method promises up to a four‑fold reduction in the number of photons required for each logical qubit, cutting the hardware footprint and error‑correction load. The approach has been validated on QuiX Quantum’s integrated photonic processors and is the subject of a pending patent. The breakthrough was highlighted in a Physical Review Applied “Editor’s Suggestion” and presented at NASA’s Ames Research Center.