AWARDEE OF THCHNOLOGICAL SCIENCES PRIZE

PENG KUNCHI

Peng Kunchi, academician of Chinese Academy of Sciences,optics expert,professor of physics, Ph.D supervisor,director of Institute of Opto-Electronics at Shanxi University,vice director of Academic Committee of State Key Laboratory of Quantum Optics and Quantum Optics Devices.He was born in Aug.1936,in Zhenjiang, Jiangsu Province,and graduated from Sichuan University in 1961.
Main research interests are in quantum optics and solid laser technology. He designed and constructed a continuous intra-cavity frequency-doubled and frequency-stabilized Nd:YAP/KTP laser and a semi-monolithic non-degenerate optical parametric amplifier consisting of an a-cut KTP crystal. The different types of non-classical states of optical field, such as the quadrature phase-amplitude squeezed state, the intensity difference squeezed state, and bright EPR entangled state, have been generated with above home-made optical system. Using the obtained intensity difference squeezed light the experiments of the weak signal detection with the sensitivity beyond the Shot-Noise-Limit (SNL) and the quantum measurement satisfying all criteria of Quantum Non-Demolition (QND) have been accomplished by his research group. Recently, the fundamental experiments for quantum communication of continuous variables, the quantum dense coding, the generation of tri-partite entangled state light with full inseparability and the controlled quantum dense coding, have been completed in his laboratory. The peculiarities of these experiments are in which the bright EPR optical beams with the quantum anti-correlation of quadrature amplitudes and the quantum correlature of quadrature phases and a special designed detection system for Bell-state are applied. Due to utilizing quantum entanglement the capacity of quantum channel used for communication is increased and can be controlled. He designed the experimental systems for the entanglement swapping and the quantum communication network which are relatively easier to be demonstrated. The group leaded by him researched and innovated the frequency-stabilized cw Nd:YAG laser with high output power, all-solid-state frequency stabilized Nd:YVO4/KTP and Nd:YAP/KTP lasers. Right now these research reaults have been developed to be a series of laser products in his Institute.