Lixing You

Single photon detector with high polarization sensitivity

2015 · Scientific Reports

Polarization is one of the key parameters of light. Most optical detectors are intensity detectors that are insensitive to the polarization of light. A superconducting nanowire single photon detector (SNSPD) is naturally sensitive to polarization …

An entanglement-based quantum network based on symmetric dispersive optics quantum key distribution

2019 · arXiv (Cornell University)

Quantum key distribution (QKD) is a crucial technology for information security in the future. Developing simple and efficient ways to establish QKD among multiple users are important to extend the applications of QKD in communication …

Gaussian Boson Sampling with Pseudo-Photon-Number-Resolving Detectors and Quantum Computational Advantage

2023 · Physical Review Letters

We report new Gaussian boson sampling experiments with pseudo-photon-number-resolving detection, which register up to 255 photon-click events. We consider partial photon distinguishability and develop a more complete model for the characterization of the noisy Gaussian …

Entanglement Networks with Fiber-Pigtailed Silicon Nitride Microring

2023

A fully connected entanglement network with four users is experimentally demonstrated by using multi-wavelength energy-time entanglement source with a fiber-pigtailed silicon nitride microring. The entanglement-based quantum key distributions among users are realized with improved performance.