Localization in superconducting circuits

• Grant number: 22/12382-4
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: March 01, 2023
• Status: Discontinued
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Romain Pierre Marcel Bachelard
• Grantee: Pedro Pablo Rosario Vargas
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 18/15554-5 - Transport and localization of light in two and three dimensions, AP.JP2
• Associated scholarship(s): 24/05564-4 - Tomography of multipartite-entangled systems using matrix product states, BE.EP.DD

Abstract

Localization is a desirable phenomenon in superconducting qubits, due to the necessity to isolate certain parts of the system from the others and thus perform local operations. In this project, we aim to investigate localization in circuits of superconducting qubits, in presence of competing nearest-neighbor and long-range coupling in circuits with frequency disorder. Our objective is to identify how the capacitive-induced coupling between remote qubits can reshape the localization properties of 1D and 2D circuits, and increase the fidelity of operations. This project addresses both the single-excitation and double-excitation regime, performing a first step from the Anderson localization toward the many-body regime, using tools such as spectral analysis. (AU)