Events Calendar

Quantum Science & Technology Seminar - Alec Eickbusch, Thursday, 9/28 at 2pm in EEB 248

Speaker: Alec Eickbusch, Yale University

Talk Title: Advances in control and error correction of GKP codes in superconducting circuits

Series: Quantum Science & Technology Seminar Series

Abstract: The past four years have seen rapid experimental progress in realizing the quantum error correction code proposed in 2001 by Gottesman, Kitaev, and Preskill (GKP) in which logical states are encoded as oscillator grid states [1]. Recent milestones include code preparation and real-time error correction in trapped-ion motional modes and in superconducting cavities [2-6]. In this overview talk, I will review experiments from our lab at Yale that have led to these advances, focusing on the engineering of an experimental architecture for the code's realization in superconducting circuits [2]. I also will demonstrate how the same tools can be used for universal control of an oscillator with weak dispersive coupling to a qubit [5]. Finally, I will share our recent results on optimizing the error correction protocol using model-free reinforcement learning, leading to the demonstration of a fully error-corrected quantum memory with coherence beyond break even [6].

[1] Gottesman, Kitaev, Preskill, PRA 2001; [2] Campagne-Ibarcq, Eickbusch, Touzard et al. Nature 2020 ; [3] Flühmann et al. Nature 2019 ; [4] de Neeve et al. Nature Physics 2022; [5] Eickbusch et al. Nature Physics 2022; [6] Sivak et al. Nature 2023

Biography: Alec Eickbusch is a PhD candidate in applied physics at Yale University in the group of Michel Devoret. Alec did his undergraduate studies at the University of Texas at Austin where he earned degrees in physics and electrical engineering. At Yale, Alec's research has focused on bosonic quantum error correction in superconducting circuits and quantum control of high-quality oscillators. Alec is also a consultant for Nord Quantique, and he will join Google Quantum AI as a research scientist in Fall 2023.

Host: Quntao Zhang, Wade Hsu, Mengjie Yu, Jonathan Habif & Eli Levenson-Falk

Webcast: https://usc.zoom.us/j/92644326549

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

WebCast Link: https://usc.zoom.us/j/92644326549

Audiences: Everyone Is Invited

Contact: Marilyn Poplawski