1.8k citations · 5.4k across the 26 of their papers we have counts for
26 papers
Free-Space Twin-Field Quantum Key Distribution
Yu-Huai Li, Ting Zeng, Min-Yan Wang +22
Twin-field quantum key distribution (TF-QKD) elevates the secure key rate from a linear to a square-root dependence on channel loss while preserving measurement-device-independent…
113 km absolute ranging with nanometer precision
Yan-Wei Chen, Meng-Zhe Lian, Jin-Jian Han +15
Accurate long-distance ranging is crucial for diverse applications, including satellite formation flying, very-long-baseline interferometry, gravitational-wave observatory, geograp…
Microsatellite-based real-time quantum key distribution
Yang Li, Wen-Qi Cai, Ji-Gang Ren +38
A quantum network provides an infrastructure connecting quantum devices with revolutionary computing, sensing, and communication capabilities. As the best-known application of a qu…
Single-photon interference over 8.4 km urban atmosphere: towards testing quantum effects in curved spacetime with photons
Hui-Nan Wu, Yu-Huai Li, Bo Li +8
The emergence of quantum mechanics and general relativity has transformed our understanding of the natural world significantly. However, integrating these two theories presents imm…
Dual-comb spectroscopy over 100km open-air path
Jin-Jian Han, Wei Zhong, Ruo-Can Zhao +19
Satellite-based greenhouse gases (GHG) sensing technologies play a critical role in the study of global carbon emissions and climate change. However, none of the existing satellite…
Effect of light injection on the security of practical quantum key distribution
Liying Han, Yang Li, Hao Tan +7
Quantum key distribution (QKD) based on the fundamental laws of quantum physics can allow the distribution of secure keys between distant users. However, the imperfections in reali…
Portable ground stations for space-to-ground quantum key distribution
Ji-Gang Ren, Maimaiti Abulizi, Hai-Lin Yong +23
Quantum key distribution (QKD) uses the fundamental principles of quantum mechanics to share unconditionally secure keys between distant users. Previous works based on the quantum…
113 km Free-Space Time-Frequency Dissemination at the 19th Decimal Instability
Qi Shen, Jian-Yu Guan, Ji-Gang Ren +28
Optical clock networks play important roles in various fields, such as precise navigation, redefinition of "second" unit, and gravitational tests. To establish a global-scale optic…
Single-mode fiber coupling with a M-SPGD algorithm for long-range quantum communications
Kui-Xing Yang, Maimaiti Abulizi, Yu-Huai Li +7
Satellite-based quantum communication is a promising approach for realizing global-scale quantum networks. For free-space quantum channel, single-mode fiber coupling is particularl…
Long-distance free-space measurement-device-independent quantum key distribution
Yuan Cao, Yu-Huai Li, Kui-Xing Yang +20
Measurement-device-independent quantum key distribution (MDI-QKD), based on two-photon interference, is immune to all attacks against the detection system and allows a QKD network…
Towards satellite-based quantum-secure time transfer
Hui Dai, Qi Shen, Chao-Ze Wang +11
High-precision time synchronization for remote clocks plays an important role in fundamental science and real-life applications. However, the current time synchronization technique…
Time-Frequency Transfer through a 70 dB Free Space Channel: Towards Satellite-Ground Time Dissemination
Qi Shen, Jian-Yu Guan, Ting Zeng +15
Time and frequency transfer lies at the heart of the field of metrology. Compared to current microwave dissemination such as GPS, optical domain dissemination can provide more than…
Polarization design for ground-to-satellite quantum entanglement distribution
Xuan Han, Hai-Lin Yong, Ping Xu +8
Polarization maintenance is a key technology for free-space quantum communication. In this paper, we describe a polarization maintenance design of a transmitting antenna with an av…
Point-ahead demonstration of a transmitting antenna for satellite quantum communication
Xuan Han, Hai-Lin Yong, Ping Xu +7
A low-divergence beam is an essential prerequisite for a high-efficiency longdistance optical link, particularly for satellite-based quantum communication. A point-ahead angle, cau…
Spaceborne low-noise single-photon detection for satellite-based quantum communications
Meng Yang, Feihu Xu, Ji-Gang Ren +9
Single-photon detectors (SPDs) play important roles in highly sensitive detection applications, such as fluorescence spectroscopy, remote sensing and ranging, deep space optical co…
Satellite-relayed intercontinental quantum network
Sheng-Kai Liao, Wen-Qi Cai, Johannes Handsteiner +33
We perform decoy-state quantum key distribution between a low-Earth-orbit satellite and multiple ground stations located in Xinglong, Nanshan, and Graz, which establish satellite-t…
Bell Test Over Extremely High-Loss Channels: Towards Distributing Entangled Photon Pairs Between Earth and Moon
Yuan Cao, Yu-Huai Li, Wen-Jie Zou +8
Quantum entanglement was termed "spooky action at a distance" in the well-known paper by Einstein, Podolsky, and Rosen. Entanglement is expected to be distributed over longer and l…
Satellite-Based Entanglement Distribution Over 1200 kilometers
Juan Yin, Yuan Cao, Yu-Huai Li +31
Long-distance entanglement distribution is essential both for foundational tests of quantum physics and scalable quantum networks. Owing to channel loss, however, the previously ac…
Ground-to-satellite quantum teleportation
Ji-Gang Ren, Ping Xu, Hai-Lin Yong +29
An arbitrary unknown quantum state cannot be precisely measured or perfectly replicated. However, quantum teleportation allows faithful transfer of unknown quantum states from one…
Satellite-to-ground quantum key distribution
Sheng-Kai Liao, Wen-Qi Cai, Wei-Yue Liu +31
Quantum key distribution (QKD) uses individual light quanta in quantum superposition states to guarantee unconditional communication security between distant parties. In practice,…
Ground test of satellite constellation based quantum communication
Sheng-Kai Liao, Hai-Lin Yong, Chang Liu +22
Satellite based quantum communication has been proven as a feasible way to achieve global scale quantum communication network. Very recently, a low-Earth-orbit (LEO) satellite has…
Random number generation with cosmic photons
Cheng Wu, Bing Bai, Yang Liu +14
Random numbers are indispensable for a variety of applications ranging from testing physics foundation to information encryption. In particular, nonlocality tests provide a strong…
Entanglement-based quantum key distribution with biased basis choice via free space
Yuan Cao, Hao Liang, Juan Yin +10
We report a free-space entanglement-based quantum key distribution experiment, implementing the biased basis protocol between two sites which are 15.3 km apart. Photon pairs from a…
Bounding the speed of `spooky action at a distance'
Juan Yin, Yuan Cao, Hai-Lin Yong +10
In the well-known EPR paper, Einstein et al. called the nonlocal correlation in quantum entanglement as `spooky action at a distance'. If the spooky action does exist, what is its…