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Two-color continuous-variable entanglement generated in nondegenerate optical parametric oscillator
Authors:YB Yu  HJ Wang
Institution:1. School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832003, PR China;2. Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi, Xinjiang 832003, PR China;3. College of Sciences, Shihezi University, Xinjiang 832003, PR China;1. Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia;2. Centre of Innovative Nanostructures & Nanodevices (COINN), Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia;3. Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia;4. Center for Corrosion Research & Mechanical Engineering Department, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia;5. Electrical & Electronic Engineering Department, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia;6. Centralized Analytical Laboratory, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia;1. College of Physics and Energy, Fujian Normal University, Fuzhou, 350117, China;2. Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou, 350117, China;3. Fujian Provincial Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Xiamen, 361005, China;1. College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China;2. Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China;3. Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, China
Abstract:A scheme is proposed to produce two-color continuous-variable (CV) entanglement in nondegenerate optical parametric oscillator with an injected signal (INOPO). The quantum correlations between signal and idler beams are calculated by applying sufficient inseparability criteria for bipartite CV entanglement. The results indicate that two-color CV entangled beams can be produced when the INOPO is operating both below and above the threshold. The injected signal does not markedly diminish the quantum correlations between the signal and idler beams. The degree of entanglement dependence on damping rates is also investigated.
Keywords:
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