Alp Sipahigil (Advisor)

Silicon is the ideal material for building electronic and photonic circuits at scale. Spin qubits and integrated photonic quantum technologies in silicon offer a promising path to scaling by leveraging advanced semiconductor manufacturing and integration capabilities. However, the lack of deterministic quantum light sources, two-photon gates, and spin-photon interfaces in silicon poses a major challenge to scalability. In this work, we show a new type of indistinguishable photon source in silicon photonics based on an artificial atom. We show that a G center in a silicon waveguide can...

Superconducting quantum circuits are one of the leading technologies for building quantum computers. These circuits are made of superconducting resonators with quality factors on the order of $10^5-10^6$. Because of the high device Q-factor when operating in the superconducting regime, loss mechanisms that would otherwise be insignificant to the overall resonator Q-factor start to become important. One such mechanism we explore in this project is the impact of surface piezoelectricity on qubit and resonator quality factors. Surface piezoelectricity arises due to atomic dipoles...