Alp Sipahigil (Advisor)

Color centers in silicon are emerging as promising candidates for photonic quantum processors. Among these color centers, the T center’s long spin coherence and telecom-band optical transitions make it an attractive target for quantum repeater and memory applications. Due to the T center’s long optical lifetime, cavity enhancement is an important prerequisite to any practical implementation of quantum protocols. In this work, we demonstrate a silicon photonics platform enabling a high yield of strongly enhanced T centers from distinct cavities through a single bus waveguide. We use a...

Point defects in crystalline materials can introduce localized defects states with optical transitions, creating color centers. Color centers in silicon have recently shown their potential as telecom-band single photon emitters. Leveraging the mature semiconductor fabrication techniques, silicon color centers can be fabricated on a large scale and are compatible with integrated photonics. Among all the silicon color centers investigated so far, T centers provide a spin-photon interface suitable for quantum networking and communication applications. In this project, we demonstrate coherent...

Silicon, a mature platform for the semiconductor industry, has become a leading platform for future quantum technologies. As a high-purity material, it serves as a low-noise host for a variety of spin qubits. As a low-loss material, it is a desirable substrate and material platform for next generation quantum devices. In this project, we aim to engineer a hybrid quantum system on silicon with superconducting circuits and acceptor-based spin qubits. We plan to fabricate high-impedance resonators using high kinetic inductance superconductors to enable strong electric dipole coupling between...