Virtual and CREOL: CROL-103

Title: Silicon spin-photon qubit sources for scalable quantum photonics

Abstract: Solid-state artificial atoms are key to spin-based quantum information processing and quantum networks, owing to their high-quality spin-photon interfaces and long spin coherence times. Yet, most platforms struggle with scalable monolithic integration and efficient telecom-band coupling to optical fibers. Silicon color centers overcome these barriers by providing single-photon emission directly in the telecommunication bands while leveraging mature silicon semiconductor manufacturing.

In this talk, I will present the first all-silicon quantum light source, created by embedding a single silicon color center in a nanophotonic cavity, achieving near-unity atom-cavity coupling, over 30× enhanced single-photon emission, and an 8× acceleration of emission. I will also discuss the programmable and deterministic formation of novel silicon quantum emitters with promising optical and spin properties. Together, these advances lay the foundation for fully integrated, scalable silicon quantum photonic devices, enabling next-generation quantum networks and spin-based quantum information processing.

About the Speaker: Dr. Wayesh Qarony is an Assistant Professor in Electrical and Computer Engineering, with a joint appointment in Physics, at the University of Central Florida (UCF). He was previously a postdoctoral scholar at the University of California, Berkeley, and the Molecular Foundry at Lawrence Berkeley National Laboratory, and also held a postdoctoral appointment at UC Davis. He earned his Ph.D. in Applied Physics with distinction from The Hong Kong Polytechnic University, co-advised by Dietmar Knipp at the Geballe Laboratory for Advanced Materials at Stanford University, and his M.Sc. in Electrical Engineering from Jacobs University Bremen, Germany. Dr. Qarony was awarded and honored many times, such as summa-cum-laude gold medal in B.Sc., German Hempel & HKPFS fellowships, UC Davis PSA grant, outstanding PolyU Ph.D. graduate shining in academia honor, UC Berkeley NSF I-Corps grant award, 2022 NSF I-Corps stipend award, and best paper presentation awards.

Dr. Qarony has co-authored several pioneering works, including the first all-silicon quantum light source, the first experimental demonstration and programmable formation of the Ci-center spin-photon qubit in silicon, the first scale-invariant single-mode semiconductor surface-emitting laser (BerkSEL), and record-setting photoabsorption in silicon optical sensors surpassing III-V semiconductors in the NIR. At UCF, he leads the Quantum Devices Lab (Q-Lab), which focuses on silicon color centers as spin-photon qubits and nanophotonic telecom-band single-photon detectors in silicon.

Virtual Location URL: https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fucf.zoom.us%2Fj%2F92281584454%3Ffrom%3Daddon&data=05%7C02%7Caaron.eades%40ucf.edu%7Ce5d8a22108814dfca11808ddef960138%7Cbb932f15ef3842ba91fcf3c59d5dd1f1%7C0%7C0%7C638930149749766889%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=gtKBz1ObVCnJtGuKY4DUnzzlMrOfvlLs8I8fevuU%2BLM%3D&reserved=0