While the fully fault-tolerant universal quantum computing system is still many years ahead, building an early quantum computer with quantum advantage becomes a feasible near-term milestone that we can realistically plan. Increasing number of near-term applications has been accelerating the development of quantum hardware in the industries, and as quantum system size grows, we need a whole system metric to evaluate the level of hardware performance. I would like to introduce the quantum volume (arXiv:1811.12926 and more recently arXiv:2008.08571) as a system-level metric that quantifies quantum computational power of early quantum computing processors. The quantum volume depends on various individual component metrics such as gate fidelity and crosstalk. I will discuss some of the challenges in building superconducting quantum hardware and suggest few directions to improve the quantum volume.
This seminar is sponsored by the department of Applied Physics and the Ginzton Laboratory.
Dr. Hanhee Paik is a Research Staff Member in the IBM Quantum group, IBM Research. Through her research career, she has been focusing on understanding the coherence mechanisms of superconducting qubits and developing superconducting multi-qubit architectures. Dr. Paik pioneered the novel design of a superconducting qubit that helped the industry to push the boundary of superconducting qubit performance and her research on the quantum processor design has greatly impacted the quantum computing community. Today's IBM Quantum systems coherence times benefit from Dr. Paik's work, and average an industry-best 100 microseconds. She played a pivotal role developing the 14 and 16-qubit IBM Q Experience device (Rueschlikon and Melbourne), and she is currently working on developing the next generation of quantum computing processors.