2006/10/24 by Alessandro S. Villar, A. S. Villar, Katiuscia N. Cassemiro +9 · 45 citations
Computer Science · Mathematics · Physics and Astronomy · #Amplitude #Computer science #Function (biology) #Mathematics #Mechanical and Optical Resonators #Noise (video) #Optical parametric oscillator #Optics #Parametric oscillator #Parametric statistics #Physics #Power (physics) #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Statistical physics #Statistics #Subtraction #quant-ph
paper · pdf · doi:10.1364/josab.24.000249
published in Journal of the Optical Society of America B 24(2), 249 (Optica Publishing Group) · 9 pages, 6 figs. Important reference for readers of quant-ph/0610197. J. Opt. Soc. Am. B, Feature Issue on Optical Quantum-Information Science, doc. ID 70938 (posted 5 September 2006, in press)
arxiv created 2006/10/24 · openalex publication_date 2007/01/26 · arxiv updated 2015/06/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate entanglement in the above-threshold optical parametric oscillator, both theoretically and experimentally, and discuss its potential applications to quantum information. The fluctuations measured in the subtraction of signal and idler amplitude quadratures are Δ2p̂−=0.50(1), or −3.01(9) dB, and in the sum of phase quadratures they are Δ2q̂+=0.73(1), or −1.37(6) dB. A detailed experimental study of the noise behavior as a function of pump power is presented, and the discrepancies with theory are discussed.