Subject：Generation of Gaussian and non-Gaussian multimode entangled states of ultrashort light pulses
Speaker：Prof. Claude Fabre
Emcee：Prof Jietai Jing
Time：9:30am, 21th Nov, 2018
Place：Science Building A814
Abstract：
The development of Wavelength Division Multiplexing has been at the origin of a revolution in communication, that has even changed our everyday life. It is natural to investigate now whether this way of encoding and processing classical information can be extended to the domain of quantum information processing. We show that parametrically generated optical frequency combs, spanning over more than one million wavelength components, exhibit highly multipartite entanglement between the quantum fluctuations of its frequency modes. We completely characterize such highly multimode quantum states of light and discuss the ways to utilize them in Measurement Based Quantum Computing. We finally show how to produce, by mode-selective photon subtraction, the pure states exhibiting non-Gaussian statistics that are needed to provide a quantum advantage in Quantum Computing tasks.
About the Speaker:
Prof. Claude Fabre is Emeritus Professor at Sorbonne University, Honorary Professor at ECNU, former senior member of the Institut Universitaire de France, fellow of the Optical Society of America and European Optical Society andGreat Prize Leon Brillouin of the French Optical Society. His research work mainly concerns the manipulation of quantum fluctuations in light and the generation of quantum correlation and entanglement between quantum states of light using different nonlinear optics devices, in particular Optical Parametric Oscillators. His most recent works deal with the study of quantum effects in optical images and in frequency combs, and with the use of such non-classical fields to lower the quantum limits in high sensitivity optical measurements and to perform deterministic quantum information processing tasks. He has published more than 190 refereed publications and two textbooks: “Introduction to Quantum Optics” and “Introduction à la physique moderne: relativité et physique quantique”.
