2009/06/11 by J. E. S. Cesar, J. E. S. César, A. S. Coelho +6 · 41 citations
Computer Science · Mathematics · Physics and Astronomy · #Computer science #Condensed matter physics #Crystal (programming language) #Image (mathematics) #Materials science #Mathematics #Mechanical and Optical Resonators #Noise (video) #Nonlinear optics #Nonlinear system #Optics #Parametric statistics #Phase (matter) #Phase noise #Physics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum mechanics #Quantum noise #Quantum optics and atomic interactions #Statistical physics #Thermal fluctuations #quant-ph
paper · pdf · doi:10.1103/physreva.79.063816
published in Physical Review A 79(6) (American Physical Society)
openalex publication_date 2009/06/11 · arxiv created 2009/06/22 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show theoretically and experimentally that scattered light by thermal phonons inside a second-order nonlinear crystal is the source of additional phase noise observed in optical parametric oscillators. This additional phase noise reduces the quantum correlations and has hitherto hindered the direct production of multipartite entanglement in a single nonlinear optical system. We cooled the nonlinear crystal and observed a reduction in the extra noise. Our treatment of this noise can be successfully applied to different systems in the literature.