Topic: Gauge-redundant digitizations of lattice field theories on a Quantum Computer
Speaker: Tenure-track Assist. Prof. Yingying Li
Coordinates: PCFT C1124, 16:00, Thursday, February 29
Abstract: Quantum simulation of High Energy Physics (HEP) has seen remarkable growth in recent years. Nevertheless, there is a continuous need for advancements in the overall simulation framework given the constraints imposed by limited quantum resources and contamination from quantum errors. I will discuss a specific foundational element - digitization, a crucial method for encoding field variables into qubits. This is particularly relevant for gauge theories with local symmetry and field variables of infinite dimension. During the talk, I will explore the connection between gauge theory digitization methods and approximate error correction codes, present the existence of error thresholds below which the gauge-redundant digitization combined with error correction has better fidelity than the gauge-fixed digitization.