Characterization of Quantum State Generated on Chip

Download or read book Characterization of Quantum State Generated on Chip written by Haoyu He and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum protocols, which exploit non-classical correlations produced by quantum light sources, have demonstrated their advantages over their classical counterparts. Being able to engineer and characterize on-chip quantum light sources used to implement these quantum protocols is becoming crucial, as practical quantum-enhanced applications evolve. In this thesis, we first demonstrate that the photon statistics of our on-chip quantum source can be measured using pulsed pumping and single-photon detectors. We show that non-classical correlations $g^{(2)}$ and noise reduction factor are degraded in a noisy and lossy environment. We also demonstrate that the bi-photon joint spectrum amplitude can be tuned by engineering the waveguide structure. The ability to engineer and characterize the on-chip quantum source paves the way to practical quantum applications, such as quantum illumination (QI) protocol. We also show that the performance of QI can be enhanced by increasing the number of frequency modes through waveguide engineering.