2006/10/23 by Katiúscia N. Cassemiro, K. N. Cassemiro, A. S. Villar +7 · 28 citations
Computer Science · Physics and Astronomy · #Nonlinear optics #Parametric statistics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum imaging #Quantum information #Quantum information processing #Quantum metrology #Quantum optics #Quantum optics and atomic interactions #Spectroscopy and Quantum Chemical Studies #Spontaneous parametric down-conversion #quant-ph
paper · pdf · doi:10.1364/ol.32.000695
published in Optics Letters 32(6), 695 (Optica Publishing Group) · 3 pages, 3 figures
arxiv created 2006/10/23 · openalex publication_date 2007/02/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Quantum correlations among bright pump, signal, and idler beams produced by an optical parametric oscillator, all with different frequencies, are experimentally demonstrated. We show that the degree of entanglement between signal and idler fields is improved by using information on pump fluctuations. To our knowledge this is the first observation of three-color optical quantum correlations.