Generation and manipulation of entangled photons in a domain-engineered lithium niobate waveguide

2013/07/15 by Yang Ming, Ming, Yang, Tan, Ai-hong +8
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Photonic and Optical Devices #Photorefractive and Nonlinear Optics #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.1307.3834

openalex publication_date 2013/07/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We propose to integrate the electro-optic tuning function into polarization-entangled photon pair generation process in a periodically poled lithium niobate (PPLN). Due to the versatility of PPLN, both the spontaneously parametric down conversion and electro-optic polarization rotation effects could be realized simultaneously. Orthogonally-polarized and parallel-polarized photon pairs thus are instantly switchable by tuning the applied field. The characteristics of the source are investigated showing adjustable bandwidths and high entanglement degrees. Moreover, other kinds of reconfigurable entanglement are also achievable based on suitable domain-design. We believe the domain engineering is a very promising solution for next generation function-integrated quantum circuits.

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