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量子通信是量子物理与信息科学的交叉学科,在实现信息的无条件安全传送、量子信息的操控、传递等方面具有重要的应用。课题组主要开展量子通信方面的实验和理论研究,针对量子通信的新原理、新方法进行探索和研究,并由此发展量子通信的相关新技术,研制相关原理型器件,推进量子通信的发展和实用化。近期的研究方向:连续变量量子保密通信;腔量子光力;光场量子态工程和操控。

最新工作

Quantum random number generator with discarding boundary bin measurement and multiinterval sampling


Authors:Zhenguo Lu, Jianqiang Liu, Xuyang Wang, Pu Wang, Yongmin Li, and Kunchi Peng

A quantum random number generator (QRNG) provides a reliable means for the generation of true random numbers. The inherent randomness of the vacuum fluctuations makes the quantum vacuum state a superior source of entropy.


Continuous-variable measurement-device-independent quantum key distribution with source-intensity errors


Authors:Pu Wang, Xuyang Wang, and Yongmin Li

Continuous-variable measurement-device-independent quantum key distribution (CV -MDI-QKD) is immune to all detector side channel attacks, however its security requires trusted sources. 


Impact of Four-Wave-Mixing Noise from Dense Wavelength-Division-Multiplexing Systems on Entangled-State Continuous-Variable Quantum key


Authors:Shanna Du, Yan Tian, and Yongmin Li.

Integrating quantum key distribution (QKD) on the existing optical fiber network through dense wavelength-division multiplexing (DWDM) can greatly reduce the costs of quantum channels and improve the....

Microfiber Mechanical Resonator for Optomechanics


Authors:Qiang Zhang, Ruili Zhai, Shiwei Yang, Shuai Yang, and Yongmin Li.

Optomechanics is a promising field with important applications in ultrasensitive sensing and quantum information processing. A variety of micromechanical resonators are proposed and demonstrated for....

High-Gain and Narrow-Bandwidth Optical Amplifier via Optomechanical Four-Wave Mixing


Authors:Zongyang Li, Zhenqiang Ren, Yongmin Li, Yong-chun Liu, and Kunchi Peng.

We present an ultrahigh gain, narrow bandwidth, and low noise optical amplifier via the radiation pressure induced by the four-wave mixing (FWM) effect based on a cavity optomechanical system in the....