Towards practical and efficient quantum phase estimation

Haoya Li, Stanford University
11/15, 2023 at 4:10PM-5PM in 939 Evans (for in-person talks) and

Quantum phase estimation (QPE) is of essential importance in the field of quantum computing, serving as a foundational component of many quantum algorithms. This presentation will delve into the latest advancements that have been made to enhance the efficiency and practicality of QPE. We will begin with a succinct historical overview of the development of QPE algorithms. Following this, I will present a selection of near-optimal algorithms specifically designed for early fault-tolerant quantum computers, which are often constrained by limited quantum resources. We will examine both single-mode and multi-mode QPE algorithms under various model assumptions. To conclude, I will touch on a recent refinement that significantly increases the practicality of the QPE algorithm.