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Make plans to join us for the next Physical Review Journal Club at 8:00 p.m. ET Thursday, December 14. Authors Hua-Lei Yin (Nanjing University, China) and Wei Li (University of Science & Technology, Hefei, China) will present their works, with Yin presenting "Experimental Quantum Communication Overcomes the Rate-Loss Limit without Global Phase Tracking" and Li presenting "Twin-Field Quantum Key Distribution without Phase Locking." Following their presentation, both authors will participate in a Q&A session with participants.
In "Experimental Quantum Communication Overcomes the Rate-Loss Limit without Global Phase Tracking," Yin and co-authors overcame the limits of TF-QKD to enable long distance quantum communication. Implementation requires complex global phase tracking and strong phase references that not only add to noise but also reduce the duty cycle for quantum transmission; using an innovative but simpler measurement-device-independent QKD, the team resolved these issues to achieve even higher SKRs than TF-QKD.
In "Twin-Field Quantum Key Distribution without Phase Locking," Li and colleagues found an approach to recover the single-photon interference pattern and realize TF-QKD without phase locking. By separating the communication time into reference frames and quantum frames, the reference frames serve as a flexible scheme for establishing a global phase reference. By generating a repeaterlike key rate scaling with a SKR of 34 times higher than the previous capacity, researchers uncovered a scalable and practical solution to TF-QKD, an important step towards broader applications.
You can explore these topics further by reading a synopsis of the research from Physics Magazine.
Come with questions and be ready to learn more about simplifying long-range quantum cryptography. | Presenters:
Hua-Lei Yin (Nanjing University, China)
Wei Li (University of Science & Technology, Hefei, China)
Read ahead in Physical Review Letters:
Experimental Quantum Communication Overcomes the Rate-Loss Limit without Global Phase Tracking
Lai Zhou, Jinping Lin, Yuan-Mei Xie, Yu-Shuo Lu, Yumang Jing, Hua-Lei Yin, and Zhiliang Yuan
Phys. Rev. Lett. 130, 250801
Twin-Field Quantum Key Distribution without Phase Locking
Wei Li, Likang Zhang, Yichen Lu, Zheng-Ping Li, Cong Jiang, Yang Liu, Jia Huang, Hao Li, Zhen Wang, Xiang-Bin Wang, Qiang Zhang, Lixing You, Feihu Xu, and Jian-Wei Pan
Phys. Rev. Lett. 130, 250802
This session will be moderated by:
Prof. Xiongfeng Ma, Tsinghua University, Beijing, China
About the Physical Review Journal Club:
Physical Review Journal Club meetings enable participants to meet leaders in the field of physics, and delve into the latest published research. Each one-hour Journal Club meeting includes a presentation followed by moderated Q&A time with the participating researcher(s). This free, open-to-all webinar series offers a rare opportunity to engage with the authors of key scientific developments in a friendly, "Ask Me Anything" format. | | | |
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