Quantum Computer Architecture and Qubit Control

Amitabh Yadav

Quantum Computing is an emerging field of technology with the promise that engineered quantum systems can address hard problems such as, problems with exponential compute complexity in Chemistry, Genomics, Optimization and many more applications. Quantum Computer Architecture is an area of research targeted for the NISQ-era quantum computing and little research has been done for development of a scalable classical control and read-out infrastructure for the quantum processors. The project is aimed at study of SoC-FPGA design methodology and architecture design for control of quantum processor. The targeted quantum hardware is the Spin-Qubit in Semiconductor Quantum Dot Chip. The project is intended for understanding the design and working of a silicon-spin qubit for a computer (architecture) engineer. It further helps identify necessities for an architecture, Instruction Set requirements, bottlenecks and future challenges (specific to Spin-Qubit quantum processor) that would help in better designs for new control architectures. The objective of this thesis is directed towards addressing the architectural challenges for the quantum-classical hardware for controlling the NISQ-era quantum devices and beyond. We analyze the control infrastructure requirements and propose a micro-architecture and waveform generation methodology to integrate the physical device with the quantum compilation tool-chain.

Seth Lloyd

Hansika Weerasena, Prabhat Mishra

Hans Johnson, Silvia Zorzetti, Jafar Saniie

This work explores avenues and target areas for optimizing FPGA-based control hardware for experiments conducted on superconducting quantum computing systems and serves as an introduction to some of the current research at the intersection of classical and quantum computing hardware. With the promise of building larger-scale error-corrected quantum computers based on superconducting qubit architecture, innovations to room-temperature control electronics are needed to bring these quantum realizations to fruition. The QICK (Quantum Instrumentation Control Kit) is one leading experimental FPGA-based implementations. However, its integration into other experimental quantum computing architectures, especially those using superconducting radiofrequency (SRF) cavities, is largely unexplored. We identify some key target areas for optimizing control electronics for superconducting qubit architectures and provide some preliminary results to the resolution of a control pulse waveform. With optimizations targeted at 3D superconducting qubit setups, we hope to bring to light some of the requirements in classical computational methodologies to bring out the full potential of this quantum computing architecture, and to convey the excitement of progress in this research.

Hans Johnson, Silvia Zorzetti, Jafar Saniie

This work explores avenues and target areas for optimizing FPGA-based control hardware for experiments conducted on superconducting quantum computing systems and serves as an introduction to some of the current research at the intersection of classical and quantum computing hardware. With the promise of building larger-scale error-corrected quantum computers based on superconducting qubit architecture, innovations to room-temperature control electronics are needed to bring these quantum realizations to fruition. The QICK (Quantum Instrumentation Control Kit) is one leading experimental FPGA-based implementations. However, its integration into other experimental quantum computing architectures, especially those using superconducting radiofrequency (SRF) cavities, is largely unexplored. We identify some key target areas for optimizing control electronics for superconducting qubit architectures and provide some preliminary results to the resolution of a control pulse waveform. With optimizations targeted at 3D superconducting qubit setups, we hope to bring to light some of the requirements in classical computational methodologies to bring out the full potential of this quantum computing architecture, and to convey the excitement of progress in this research.

Grzegorz H. Kasprowicz