2024/03/19 by Carlos F. D. Faurby, Faurby, Carlos F. D., Lorenzo Carosini +21 · 1 citation
Computer Science · Medicine · Physics and Astronomy · #FOS: Physical sciences #Ocular and Laser Science Research #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2403.12866
openalex publication_date 2024/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Indistinguishability between photons is a key requirement for scalable photonic quantum technologies. We experimentally demonstrate that partly distinguishable single photons can be purified to reach near-unity indistinguishability by the process of quantum interference with ancillary photons followed by heralded detection of a subset of them. We report on the indistinguishability of the purified photons by interfering two purified photons and show improvements in the photon indistinguishability of 2.774(3)% in the low-noise regime, and as high as 10.2(5) % in the high-noise regime.