2022
14. Nanjing University, Keyu Xia, Fan Lv, Feifan Tian, Hongtao Yuan, "A graphene-based fiber optic switch and its control method", Application date: November 1, 2022, Chinese Patent Application Number: 202211354228.1, 
专利申请受理通知书.pdf
13. Nanjing University, Keyu Xia, Wenpeng Zhou, Yaping Ruan, Haodong Wu, Jiangshan Tang, Lei Tang, "Device and method for measuring specific optical rotation and circular dichroism of chiral substances", Application date: September 7, 2022, Chinese Patent Application Number: 202211089138.4, 专利申请受理通知书CA.pdf.
12.Nanjing University, Keyu Xia, Ruikai Pan, Yaping Ruan, "A laser radar device and method" , Application date: April 8, 2022, Chinese Patent Application Number:202210363574.X, （定稿）一种激光雷达装置及方法.pdf专利申请受理通知书CA(1).pdf
2021
11. Nanjing University, Keyu Xia, Jiangshan Tang, Yanqing Lu, "A back-scattering immuned frequency-multiplexed single-photon circulator", Application date: April 2, 2022, Chinese Patent Application Number: 202110763513.8 办登-一种对背向散射免疫的频率复用单光子循环器_2021107635138.pdf，专利申请受理通知书CA.pdf
10. Nanjing University, Keyu Xia, Fan Lv, Yaping Ruan, Ruikai Pan, Ye Zhang, Yanqing Lu, 'Fiber-integrated optical switch and the fabrication method', Application date：April 20, 2021, Chinese Patent Application Number: 202110422920.2.受通-光纤集成光开关、制造方法及光开关方法_2021104229202.pdf
9. Nanjing University, Keyu Xia, Ruikai Pan, Yaping Ruan, Haodong Wu, Yanqing Lu, 'A fabrication method for atomic gas chamber on ultrashort pulse laser', Application date：January 14, 2021, Chinese Patent Application Number: 202110047245. X.202110047245X.pdf
2020
8. Nanjing University, Keyu Xia, Yang Wu, Han Zhang, 'A system and a method for predicting single photon generation', Application date：August 19, 2020, PCT Patent Application Number: PCT/CN2020/109979. 
PCT专利合同条约.jpg
7. [Authorized] Nanjing University, Keyu Xia, Yaping Ruan, Shijun Ge, Lei Tang, Yanqing Lu, 'A device and method for all optical switching', Application date：August 17, 2020, Authorization date: April 6, 2021, Patent number: ZL 2020 1 0823976.4. 光开关发明专利证书2020108239764.pdf专利申请受理通知书CA-全光开关装置及其方法.pdf
6. [Authorized] Nanjing University, Keyu Xia, Yaping Ruan, Yanqing Lu, 'A device and method for detecting optical properties of chiral material', Application date: June 19, 2020, Chinese Patent Application Number: 202010564460.2.（受理通知书）一种手性物质光学活性测量装置及方法.pdf,发明专利授权证书CA.pdf
2019
5. [Authorized] Nanjing University, Keyu Xia, Yang Wu, Han Zhang, 'A system and a method for predicting single photon generation', Application date：September 5, 2019. Authorization date: June 28, 2020, Patent number: ZL 2019 1 0836348.7. （专利证书）一种预报单光子产生系统及方法.pdf（受理通知书）一种预报单光子产生系统及方法.pdf（授权通知书）一种预报单光子产生系统及方法.pdf
2015
4. Keyu Xia, Michael R. Vanner and Jason Twamley, 'An opto-magneto-mechanical quantum interface between distant superconducting qubits', PCT Patent, No. WO 2015/127498 A1, published on 3 Sept. 2015.
2014
3. Keyu Xia and Jason Twamley, 'Solid state quantum mechanical interface', Australian Patent Appl. No. 2014902910, filed on 29 July 2014.
2. Keyu Xia and Jason Twamley, 'Optical switching apparatus and method using quantum control', PCT Patent No. WO 2014/169321 A1, published on 23 Oct. 2014.
2008
1. Keyu Xia, 'A method of fabrication of coupler for polymer optical fiber', Chinese Patent No. ZL 2003 1 0100934.4, issued on 2008.
