A5090252780- Quantum Information and Cryptography
- Quantum Mechanics and Applications
- Quantum Computing Algorithms and Architecture
- Quantum optics and atomic interactions
- Neural Networks and Reservoir Computing
- Quantum and electron transport phenomena
- Orbital Angular Momentum in Optics
- Photonic and Optical Devices
- Mechanical and Optical Resonators
- Advanced Thermodynamics and Statistical Mechanics
- Statistical Mechanics and Entropy
- Laser-Matter Interactions and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Topological and Geometric Data Analysis
- Atomic and Subatomic Physics Research
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Photorefractive and Nonlinear Optics
- Advancements in Semiconductor Devices and Circuit Design
- Data Visualization and Analytics
- Quantum-Dot Cellular Automata
- Advanced Fiber Laser Technologies
- Biofield Effects and Biophysics
- Dark Matter and Cosmic Phenomena
- Surface Roughness and Optical Measurements
University of Science and Technology of China
2016-2025
Hefei National Center for Physical Sciences at Nanoscale
2007-2025
CAS Key Laboratory of Urban Pollutant Conversion
2016-2023
Beijing Academy of Quantum Information Sciences
2022-2023
Chinese Academy of Sciences
2017-2021
University of Shanghai for Science and Technology
2021
Alibaba Group (China)
2016-2018
China Center of Advanced Science and Technology
1999-2000
Entangled photons are distributed over vast distances using a satellite-to-ground link.
We perform decoy-state quantum key distribution between a low-Earth-orbit satellite and multiple ground stations located in Xinglong, Nanshan, Graz, which establish satellite-to-ground secure keys with ~kHz rate per passage of the Micius over station. The thus establishes itself and, say, another Graz. Then, upon request from command, acts as trusted relay. It performs bitwise exclusive OR operations two relays result to one stations. That way, secret is created China Europe at locations...
Gaussian boson sampling exploits squeezed states to provide a highly efficient way demonstrate quantum computational advantage. We perform experiments with 50 input single-mode high indistinguishability and squeezing parameters, which are fed into 100-mode ultralow-loss interferometer full connectivity random transformation, sampled using 100 high-efficiency single-photon detectors. The whole optical set-up is phase-locked maintain coherence between the superposition of all photon number...
Throughout history, every advance in encryption has been defeated by advances hacking with severe consequences. Quantum cryptography holds the promise to end this battle offering unconditional security when ideal single-photon sources and detectors are employed. Unfortunately, devices never exist practice device imperfections have become targets of various attacks. By developing up-conversion high efficiency low noise, we build up a measurement-device-independent quantum key distribution...
A central theme in quantum information science is to coherently control an increasing number of particles as well their internal and external degrees freedom (DoFs), meanwhile maintaining a high level coherence. The ability create verify multiparticle entanglement with individual measurement each qubit serves important benchmark for technologies. To this end, genuine multipartite have been reported up 14 trapped ions, 10 photons, superconducting qubits. Here, we experimentally demonstrate...
Entangled-photon sources with simultaneously near-unity heralding efficiency and indistinguishability are the fundamental elements for scalable photonic quantum technologies. We design realize a degenerate telecommunication wavelength entangled-photon source from an ultrafast pulsed laser pumped spontaneous parametric down-conversion (SPDC), which shows 97% 96% between independent single photons without narrow-band filtering. Such beamlike frequency-uncorrelated SPDC allows generation of...
Quantum teleportation allows a "disembodied" transmission of unknown quantum states between distant systems. Yet, all experiments to date were limited two-dimensional subspace quantized multiple levels the Here, we propose scheme for arbitrarily high-dimensional photonic and demonstrate an example teleporting qutrit. Measurements over complete set 12 qutrit in mutually unbiased bases yield fidelity 0.75(1), which is well above both optimal single-copy state-estimation limit 1/2 maximal...
We report phase-programmable Gaussian boson sampling (GBS) which produces up to 113 photon detection events out of a 144-mode photonic circuit. A new high-brightness and scalable quantum light source is developed, exploring the idea stimulated emission squeezed photons, has simultaneously near-unity purity efficiency. This GBS programmable by tuning phase input states. The obtained samples are efficiently validated inferring from computationally friendly subsystems, rules hypotheses...
We report on entanglement-based quantum key distribution between a low-Earth-orbit satellite equipped with space borne entangled-photon source and ground observatory. One of the entangled photons is measured locally at satellite, other one sent via down link to receiver in Delingha station. The attenuation vary from 29 dB 530 km 36 1000 km. observe that two-photon entanglement survives after being distributed ground, state fidelity ≥0.86. then perform protocol obtain an average final rate...
We report new Gaussian boson sampling experiments with pseudo-photon-number-resolving detection, which register up to 255 photon-click events. consider partial photon distinguishability and develop a more complete model for the characterization of noisy sampling. In quantum computational advantage regime, we use Bayesian tests correlation function analysis validate samples against all current classical spoofing mockups. Estimating best algorithms date, generating single ideal sample from...
Measurement-device-independent quantum key distribution (MDI-QKD) can eliminate all detector side channels and it is practical with current technology. Previous implementations of MDI-QKD used two symmetric similar losses. However, the secret rate severely limited when different have Here we report results first high-rate experiment over asymmetric channels. By using recent 7-intensity optimization approach, demonstrate>10×higher than previous best-known protocols for in situation large...
Abstract Quantum key distribution (QKD) enables secure exchanges between two remote users. The ultimate goal of communication is to establish a global quantum network. existing field tests suggest that networks are feasible. To achieve practical network, we need overcome several challenges including realizing versatile topologies for large scales, simple network maintenance, extendable configuration and robustness node failures. this end, present operation metropolitan-area with 46 nodes...
We report Gaussian boson sampling experiments which produce up to 113 photon detection events out of a 144-mode photonic circuit. reveal genuine high-order correlation our samples, is evidence robustness against classical simulation.
Gaussian boson sampling (GBS) is not only a feasible protocol for demonstrating quantum computational advantage, but also mathematically associated with certain graph-related and chemistry problems. In particular, it proposed that the generated samples from GBS could be harnessed to enhance classical stochastic algorithms in searching some graph features. Here, we use Jiǔzhāng, noisy intermediate-scale computer, solve The are 144-mode fully connected photonic processor, photon click up 80...
Quantum metrology employs quantum resources to enhance the measurement sensitivity beyond that can be achieved classically. While multiphoton entangled N00N states in principle beat shot-noise limit and reach Heisenberg limit, high are difficult prepare fragile photon loss which hinders them from reaching unconditional metrological advantages. Here, we combine idea of unconventional nonlinear interferometers stimulated emission squeezed light, previously developed for photonic computer...
Secret sharing of a quantum state, or secret sharing, in which dealer wants to share certain amount information with few players, has wide applications information. The critical criterion threshold scheme is confidentiality, less than the designated number no can be recovered. Furthermore, scenario, one additional exists, capability entangled and unknown Here by employing six-photon we demonstrate scheme, where shared secrecy efficiently reconstructed state fidelity as high 93%. By observing...