Measurement-Device-Independent Quantum Key Distribution Over a 404 km Optical Fiber
CAS Key Laboratory of Urban Pollutant Conversion · University of Science and Technology of China · +5 more institutions
Abstract
Measurement-device-independent quantum key distribution (MDIQKD) with the decoy-state method negates security threats of both the imperfect single-photon source and detection losses. Lengthening the distance and improving the key rate of quantum key distribution (QKD) are vital issues in practical applications of QKD. Herein, we report the results of MDIQKD over 404 km of ultralow-loss optical fiber and 311 km of a standard optical fiber while employing an optimized four-intensity decoy-state method. This record-breaking implementation of the MDIQKD method not only provides a new distance record for both MDIQKD and all types of QKD systems but also, more significantly, achieves a distance that the traditional…
Citation impact
- FWCI
- 109.57
- Percentile
- 100%
- References
- 36
Authors
19- HYHua‐Lei YinCorresponding
CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China
- TCTeng‐Yun Chen
University of Science and Technology of China, CAS Key Laboratory of Urban Pollutant Conversion
- ZYZong‐Wen Yu
Tsinghua University
- HLHui Liu
University of Science and Technology of China, CAS Key Laboratory of Urban Pollutant Conversion
- LYLixing You
Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Topics & keywords
- Quantum key distribution
- BB84
- Computer science
- Quantum cryptography
- Key (lock)
- Photon
- Electronic engineering
- Quantum