Low-power system model for quantum entangled photon-pair source  

作　　者：FENG Tianxuan ZHANG Hanyi FAN Rong MA Honghao DONG Mengcheng LI Lijing 

机构地区：[1]School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China [2]Engineering Training Center,Beihang University,Beijing 102206,China [3]Beijing Aerospace Automatic Control Institute,Beijing 100854,China

出　　处：《Journal of Systems Engineering and Electronics》2024年第5期1287-1294,共8页系统工程与电子技术（英文版）

摘　　要：The quantum entangled photon-pair source,as an essential component of optical quantum systems,holds great potential for applications such as quantum teleportation,quan-tum computing,and quantum imaging.The current workhorse technique for preparing photon pairs involves performing spon-taneous parametric down conversion(SPDC)in bulk nonlinear crystals.However,the current power consumption and cost of preparing entangled photon-pair sources are relatively high,pos-ing challenges to their integration and scalability.In this paper,we propose a low-power system model for the quantum entan-gled photon-pair source based on SPDC theory and phase matching technology.This model allows us to analyze the per-formance of each module and the influence of component cha-racteristics on the overall system.In our experimental setup,we utilize a 5 mW laser diode and a typical type-II barium metabo-rate(BBO)crystal to prepare an entangled photon-pair source.The experimental results are in excellent agreement with the model,indicating a significant step towards achieving the goal of low-power and low-cost entangled photon-pair sources.This achievement not only contributes to the practical application of quantum entanglement lighting,but also paves the way for the widespread adoption of optical quantum systems in the future.

关 键 词：low-power system model optical quantum system entangled photon-pair source spontaneous parametric down conversion 

分 类 号：O413[理学—理论物理]