Efficiency enhancement for the orbital angular momentum photon quantum interface via single photon frequency upconversion
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As the application of orbital angular momentum (OAM) of photon quantum in quantum communication, the OAM photon quantum interface for the transmission wavelength from the telecom communication quantum information storage in visible regime is required. Here we demonstrate the efficiency enhancement for the OAM photon quantum interface based on the frequency upconversion from telecom wavelength to visible regime by sum-frequency generation. The infrared photons at 1 558 nm carrying different OAM values could be converted to the visible regime at 622.2 nm with the optimal efficiency via adjusting the pump beam waist radius and intensity.
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- N. SHEN, J. YU, Z. X. HUANG and Z. A. Tang, J. Optoelectron. Laser 25, 845 (2014).(in Chinese)Google Scholar