2003/09/08 by Marco Fiorentino, Gaétan Messin, Gaetan Messin +3 · 123 citations
Chemistry · Computer Science · Physics and Astronomy · #Chemistry #Mechanical and Optical Resonators #Optics #Parametric statistics #Photon #Photon entanglement #Physics #Polarization (electrochemistry) #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Spontaneous parametric down-conversion #quant-ph
paper · pdf · doi:10.1103/physreva.69.041801
published in Physical Review A 69(4) (American Physical Society) · 10 pages, 5 figures
arxiv created 2003/09/08 · openalex publication_date 2004/04/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The need for spatial and spectral filtering in the generation of polarization entanglement is eliminated by combining two coherently driven type-II spontaneous parametric down-converters. The resulting ultrabright source emits photon pairs that are polarization entangled over the entire spatial cone and spectrum of emission. We detect a flux of \ensuremath∼12 000 polarization-entangled pairs/s per mW of pump power at 90% quantum-interference visibility, and the source can be temperature tuned for 5\phantom\rule0.3em0exnm around frequency degeneracy. The output state is actively controlled by precisely adjusting the relative phase of the two coherent pumps.