425 citations · 3.6k across the 37 of their papers we have counts for
37 papers
Improving photon number resolvability of a superconducting nanowire detector array using a level comparator circuit
Jia Huang, Xingyu Zhang, Weijun Zhang +8
Photon number resolving (PNR) capability is very important in many optical applications, including quantum information processing, fluorescence detection, and few-photon-level rang…
Characterization of a Superconducting Microstrip Single-Photon Detector Shunted with an External Resistor
Yu-Ze Wang, Wei-Jun Zhang, Guang-Zhao Xu +6
A superconducting microstrip single-photon detector (SMSPD) generally requires a shunt resistor to avoid latching, caused by its high current-carrying capacity and low kinetic indu…
Millimeter-scale active area superconducting microstrip single-photon detector fabricated by ultraviolet photolithography
Guang-Zhao Xu, Wei-Jun Zhang, Li-Xing You +7
The effective and convenient detection of single photons via advanced detectors with a large active area is becoming significant for quantum and classical applications. This work d…
Experimental Twin-Field Quantum Key Distribution Over 1000 km Fiber Distance
Yang Liu, Wei-Jun Zhang, Cong Jiang +15
Quantum key distribution (QKD) aims to generate secure private keys shared by two remote parties. With its security being protected by principles of quantum mechanics, some technol…
High-efficiency broadband fiber-to-chip coupler using a 3D nanoprinting microfiber
Dong-Hui Fan, Xing-Yu Zhang, Wei-Jun Zhang +6
We propose a method for coupling a tapered optical fiber to an inverted tapered SiN waveguide by fabricating a microfiber using 3D nanoprinting lithography. The microfiber consists…
Solving Graph Problems Using Gaussian Boson Sampling
Yu-Hao Deng, Si-Qiu Gong, Yi-Chao Gu +21
Gaussian boson sampling (GBS) is not only a feasible protocol for demonstrating quantum computational advantage, but also mathematically associated with certain graph-related and q…
Reducing current crowding in meander superconducting strip single-photon detectors by thickening bends
Jia-Min Xiong, Wei-Jun Zhang, Guang-Zhao Xu +8
To facilitate high optical coupling efficiency and absorptance, the active area of a superconducting nano/microstrip single-photon detector (SNSPD/SMSPD) is often designed as a mea…
Experimental Side-Channel-Free Quantum Key Distribution
Chi Zhang, Xiao-Long Hu, Jiu-Peng Chen +9
Quantum key distribution can provide unconditionally secure key exchange for remote users in theory. In practice, however, in most quantum key distribution systems, quantum hackers…
Twin-Field Quantum Key Distribution over 511 km Optical Fiber Linking two Distant Metropolitans
Jiu-Peng Chen, Chi Zhang, Yang Liu +16
The basic principle of quantum mechanics guarantee the unconditional security of quantum key distribution (QKD) at the cost of inability of amplification of quantum state. As a res…
Field Test of Twin-Field Quantum Key Distribution through Sending-or-Not-Sending over 428 km
Hui Liu, Cong Jiang, Hao-Tao Zhu +18
Quantum key distribution endows people with information-theoretical security in communications. Twin-field quantum key distribution (TF-QKD) has attracted considerable attention be…
Field demonstration of distributed quantum sensing without post-selection
Si-Ran Zhao, Yu-Zhe Zhang, Wen-Zhao Liu +12
Distributed quantum sensing can provide quantum-enhanced sensitivity beyond the shot-noise limit (SNL) for sensing spatially distributed parameters. To date, distributed quantum se…
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…
Single-photon linear polarimeter based on a superconducting nanowire array
X. Q. Sun, W. J. Zhang, C. J. Zhang +6
Superconducting nanowire single-photon detectors (SNSPDs) have attracted remarkable interest for visible and near infrared single-photon detection, owing to their outstanding perfo…
Sending-or-Not-Sending with Independent Lasers: Secure Twin-Field Quantum Key Distribution Over 509 km
Jiu-Peng Chen, Chi Zhang, Yang Liu +15
Twin field quantum key distribution promises high key rates at long distance to beat the rate distance limit. Here, applying the sending or not sending TF QKD protocol, we experime…
Surpassing the rate-transmittance linear bound of quantum key distribution
Xiao-Tian Fang, Pei Zeng, Hui Liu +17
Quantum key distribution (QKD offers a long-term solution to establish information-theoretically secure keys between two distant users. In practice, with a careful characterization…
An Experimentally Verified Approach to non-Entanglement-Breaking Channel Certification
Yingqiu Mao, Yi-Zheng Zhen, Hui Liu +14
Ensuring the non-entanglement-breaking (non-EB) property of quantum channels is crucial for the effective distribution and storage of quantum states. However, a practical method fo…
Experimental Twin-Field Quantum Key Distribution Through Sending-or-Not-Sending
Yang Liu, Zong-Wen Yu, Weijun Zhang +13
Channel loss seems to be the most severe limitation on the practical application of long distance quantum key distribution. The idea of twin-field quantum key distribution can impr…
12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion
Han-Sen Zhong, Yuan Li, Wei Li +17
Entangled photon sources with simultaneously near-unity heralding efficiency and indistinguishability are the fundamental elements for scalable photonic quantum technologies. We de…
Experimental Quantum Switching for Exponentially Superior Quantum Communication Complexity
Kejin Wei, Nora Tischler, Si-Ran Zhao +13
Finding exponential separation between quantum and classical information tasks is like striking gold in quantum information research. Such an advantage is believed to hold for quan…
Testing Local Realism into the Past without Detection and Locality Loopholes
Ming-Han Li, Cheng Wu, Yanbao Zhang +16
Inspired by the recent remarkable progress in the experimental test of local realism, we report here such a test that achieves an efficiency greater than (78%)^2 for entangled phot…
Continuous Generation of Volumetric Images During Stereotactic Body Radiation Therapy Using Periodic kV Imaging and an External Respiratory Surrogate
Matthieu Lafrenière, Nitin Mahadeo, John Lewis +2
We present a technique for continuous generation of volumetric images during SBRT using periodic kV imaging and an external respiratory surrogate signal to drive a patient-specific…
Device independent quantum random number generation
Yang Liu, Qi Zhao, Ming-Han Li +16
Randomness is critical for many information processing applications, including numerical modeling and cryptography. Device-independent quantum random number generation (DIQRNG) bas…
Experimental test of measurement dependent local Bell inequality with human free will
Yang Liu, Xiao Yuan, Cheng Wu +14
A Bell test can rule out local realistic models, and has potential applications in communications and information tasks. For example, a Bell inequality violation can certify the pr…
Toward Scalable Boson Sampling with Photon Loss
Hui Wang, Wei Li, Xiao Jiang +16
Boson sampling is a well-defined task that is strongly believed to be intractable for classical computers, but can be efficiently solved by a specific quantum simulator. However, a…