Quantum information science holds enormous potential to provide unprecedented capabilities in communication, computation, and precision measurement. Photonics will play a central role in future quantum technology, offering the unique and indispensable capability to conserve quantum coherence over long distances and inter-connect different quantum systems. This talk will present our efforts in developing hybrid integrated photonic platforms, which enable the exploration of new quantum phenomena, the development of novel quantum information functions, and the improvement of quantum device performance. I will first discuss the demonstration of quantum interference between cascaded second-order and intrinsic third-order nonlinear processes, leading to the first observation of single-photon Fano resonances. Next, I will focus on the first on-chip generation of high-dimensional hyper-entanglement using quantum frequency comb interference. A new protocol to implement quantum information processing in the photonic frequency domain will also be discussed. Furthermore, I will present our recent result in the demonstration of record-high optical nonlinear efficiency, which is critical to improve the quality of quantum state generation and the efficiency of quantum frequency conversion. Lastly, I will finish the talk by discussing how our hybrid integrated photonic platforms can provide new opportunities to push forward the frontier of quantum information science.

Linran Fan is an assistant professor of Optical Sciences at the University of Arizona. Linran received his Bachelor of Science in Physics from Peking University in 2011, and his Ph.D. in Electrical Engineering from Yale University in 2017. He joined the Wyant College of Optical Sciences at the University of Arizona in 2018. His research interests focus on nonlinear interactions between optical photons, superconducting circuits, electron spins, and acoustic waves at the quantum level in a hybrid of nanoscale devices and materials. Target applications include photonic information processing, communication, and precision measurement enhanced by quantum information science. He also serves as the testbed director of the NSF-ERC Center for Quantum Networks (CQN), taking the lead to demonstrate key quantum internet functions by integrating research efforts in quantum algorithms, systems, and devices.