QSE Quantum Seminar: From noisy quantum simulation to logical benchmarking on trapped-ion devices

Please join us for the QSE Center Quantum Seminar with Cristina Cirstoiu from Quantinuum, who will give the talk "From noisy quantum simulation to logical benchmarking on trapped-ion devices" on Thursday May 22nd.
Location: CM 1 121.

Pizzas will be available before the seminar at 12:00. All PhDs, postdocs, students, and PIs are welcome to join us.

TITLE: "From noisy quantum simulation to logical benchmarking on trapped-ion device"

ABSTRACT: 
Continued improvements in two-qubit gate fidelity on Quantinuum’s trapped-ion quantum computers have enabled both demonstrations of quantum error correction components and noisy digital quantum simulations that challenge the limits of classical computations. First, I discuss a dynamical simulation of the 2D Ising model on the H2 device, employing combined error suppression and mitigation techniques. We observe Floquet pre-thermalisation at timescales where state-of-the-art classical simulations become extremely difficult, if not infeasible for the particular quenches considered. Second, I introduce a framework for robustly characterising logical errors, and show how adapting similar physical error suppression leads to improved and reliable benchmarking of key building blocks in quantum error correction.

BIO:
Cristina Cirstoiu is a Lead Scientist at Quantinuum. Her research spans quantum and classical algorithms, error characterisation and mitigation. Before joining Quantinuum she was a researcher in Computer Science at Oxford University. She obtained a PhD in Physics from Imperial College London on quantum information theory and a B.A/Masters in Mathematics from Cambridge University.