Reconfigurable microring resonators for multipurpose quantum light sources

doi:10.1088/1674-1056/adcc88

中国物理B ›› 2025, Vol. 34 ›› Issue (7): 74207-074207.doi: 10.1088/1674-1056/adcc88

Reconfigurable microring resonators for multipurpose quantum light sources

Yuxing Du(杜昱星)†, Yingwen Liu(刘英文)†, Chao Wu(吴超), Pingyu Zhu(朱枰谕), Chang Zhao(赵畅), Miaomiao Yu(余苗苗), Yan Wang(王焱), Kaikai Zhang(张凯凯), and Ping Xu(徐平)‡

College of Computer Science and Technology, National University of Defense Technology, Changsha 410073, China

收稿日期:2025-03-22 修回日期:2025-04-10 接受日期:2025-04-15 出版日期:2025-06-18 发布日期:2025-07-15
通讯作者: Ping Xu E-mail:pingxu520@nju.edu.cn
基金资助:
Project supported by the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0301500) and the National Natural Science Foundation of China (Grant No. 62105366).

Reconfigurable microring resonators for multipurpose quantum light sources

College of Computer Science and Technology, National University of Defense Technology, Changsha 410073, China

Received:2025-03-22 Revised:2025-04-10 Accepted:2025-04-15 Online:2025-06-18 Published:2025-07-15
Contact: Ping Xu E-mail:pingxu520@nju.edu.cn
Supported by:
Project supported by the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0301500) and the National Natural Science Foundation of China (Grant No. 62105366).

摘要/Abstract

摘要： Microring resonators (MRRs) are extensively utilized in photonic chips for generating quantum light sources and enabling high-efficiency nonlinear frequency conversion. However, conventional microrings are typically optimized for a single specific function, limiting their versatility in multifunctional applications. In this work, we propose a reconfigurable microring resonator architecture designed to accommodate diverse application requirements. By integrating a cascaded Mach-Zehnder interferometer (MZI) as the microring coupler, the design enables independent control of the quality factors for pump, signal and idler photons through two tunable phase shifters. This capability allows for dynamic tuning and optimization of critical performance parameters, including photon-pair generation rate (PGR), spectral purity and single photon heralding efficiency (HE). The proposed structure is implemented on a silicon photonic chip, and experimental results exhibit a wide range of tunability for these parameters, with excellent agreement with theoretical predictions. This flexible and multi-functional design offers a promising pathway for high-performance, highly integrated on-chip quantum information processing systems.

关键词: microring resonators, cascaded Mach-Zehnder interferometer, quantum light sources

Abstract: Microring resonators (MRRs) are extensively utilized in photonic chips for generating quantum light sources and enabling high-efficiency nonlinear frequency conversion. However, conventional microrings are typically optimized for a single specific function, limiting their versatility in multifunctional applications. In this work, we propose a reconfigurable microring resonator architecture designed to accommodate diverse application requirements. By integrating a cascaded Mach-Zehnder interferometer (MZI) as the microring coupler, the design enables independent control of the quality factors for pump, signal and idler photons through two tunable phase shifters. This capability allows for dynamic tuning and optimization of critical performance parameters, including photon-pair generation rate (PGR), spectral purity and single photon heralding efficiency (HE). The proposed structure is implemented on a silicon photonic chip, and experimental results exhibit a wide range of tunability for these parameters, with excellent agreement with theoretical predictions. This flexible and multi-functional design offers a promising pathway for high-performance, highly integrated on-chip quantum information processing systems.

Key words: microring resonators, cascaded Mach-Zehnder interferometer, quantum light sources

中图分类号: (Nonlinear optics)

42.65.-k

42.65.Wi (Nonlinear waveguides) 42.82.-m (Integrated optics) 42.82.Et (Waveguides, couplers, and arrays)

Yuxing Du(杜昱星), Yingwen Liu(刘英文), Chao Wu(吴超), Pingyu Zhu(朱枰谕), Chang Zhao(赵畅), Miaomiao Yu(余苗苗), Yan Wang(王焱), Kaikai Zhang(张凯凯), and Ping Xu(徐平). Reconfigurable microring resonators for multipurpose quantum light sources[J]. 中国物理B, 2025, 34(7): 74207-074207.

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Reconfigurable microring resonators for multipurpose quantum light sources

Reconfigurable microring resonators for multipurpose quantum light sources

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