Apr 24 – 30, 2022
Ettore Majorana Foundation and Centre for Scientific Culture
Europe/Rome timezone

Session

L. Faoro

Apr 27, 2022, 5:30 PM
Ettore Majorana Foundation and Centre for Scientific Culture

Ettore Majorana Foundation and Centre for Scientific Culture

Via Gian Filippo Guarnotti, 26, 91016 Erice TP (Italy)

Description

Abstract:
The implementation of surface code error correction in transmons-based superconducting qubits poses a formidable challenge, because, despite all the improvements of the last years, it seems that we remain dominated by Two Level Systems (TLS) (and correlated noise) that are intrinsic to superconductor. The main purpose of this mini course is to illustrate what we understand about the microscopic origin of noise in superconducting qubits and what are the challenges we need to overcome in order to achieve surface code error correction in large arrays of superconducting qubits. The lessons are structured to convey the physical picture [i.e, not many formulas].
Lesson II:
Challenge to surface code error correction in large superconducting transmons arrays.
- Introduction to Google Sycamore and challenge to surface code error correction
- Evidence of highly correlated noise [both spatially and temporal (long-lasting)]
- TLS frequency drifts and problem with qubits calibrations.

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