Alp Sipahigil (Advisor)

State-of-the-art quantum computers currently have qubit gate error rates that are too large for practical computing. Quantum error correction can protect computations from physical errors by encoding logical qubits in many physical qubits. However, physical qubit error rates need to be sufficiently low to minimize resource overhead and suppress errors. As a result, compact qubit designs with small dissipation and error rates are crucial to scaling up a fault-tolerant quantum computer. In this project, we aim to address the scaling up of superconducting quantum processors by...

The G center, an atom-like single-photon emitter in silicon, has emerged as a promising candidate for realizing a quantum-coherent light source in integrated photonics. Our recent work demonstrating two-photon quantum interference with a single waveguide-integrated G center highlights the utility of G centers for photonic quantum information applications. However, improvements in the optical coherence properties of the G center must be achieved to enable its technological implementation. We will address this challenge by leveraging the integration capabilities of the silicon platform...

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 quantum defects. As a low-loss material, it is a desirable substrate and material platform for next generation quantum devices. However, the lack of piezoelectricity in silicon, due to its centro-symmetric structure, poses challenges for its electromechanical applications. In this project, we aim to engineer strong piezoelectric response in silicon using the atomic coherence of acceptor dopants....