Princeton University

School of Engineering & Applied Science

Integrated Frequency Conversion for Hybrid Quantum Networks

Hong Tang, Yale University
Bowen Hall Auditorium
Monday, February 19, 2018 - 12:00pm

Abstract: Hybrid quantum networks rely on faithful quantum state transfer between disparate physics elements operating at dissimilar frequencies. Quantum frequency conversion bridges their frequency gaps by coherently manipulating the carrier frequency while maintaining the quantum correlations. The efficiency of frequency conversion is dictated by photon-photon interaction in a nonlinear optical media which is typically weak. In this talk, I will show material and device engineering on an integrated photonic platform where the nonlinear photon-photon coupling can be greatly enhanced. Specifically, I will show (1) coherent conversion of light between visible and telecom wavelengths; (2) noise-free frequency shift of photon within telecom band; and (3) microwave-to-optical frequency conversion that promises to link superconducting quantum circuits and room temperature fiber-coupled quantum systems.

Bio: Hong Tang is the Llewellyn West Jones, Jr. Professor of Electrical Engineering, Physics and Applied Physics at Yale University. His research utilizes integrated photonic circuits to study photon-photon, photon-mechanics and photon-spin interactions. He joined Yale faculty as assistant professor in 2006. At Yale his group specializes in nanofabrication and precision measurement, spanning the fields of spintronics, nanophotonics and optomechanics. He is a recipient of the NSF CAREER Award and Packard Fellowship in Science and Engineering.