Work

Quantum Theory of the Josephson Junction between Finite Islands

Year: 2025

Type: article

Abstract: Superconducting circuits comprising Josephson junctions have spurred significant research activity due to their promise to realize scalable quantum computers. Effective Hamiltonians for these systems have traditionally been derived assuming the junction connects superconducting islands of infinite size. We derive a quantized Hamiltonian for a Josephson junction between finite-sized islands and predict measurable corrections to the qubit frequency and charge susceptibility to test the theory.

Source: Physical Review Letters

DOI: 10.1103/mwvt-wlkj

Authors: Thomas J. Maldonado, Alejandro W. Rodriguez, Hakan E. Türeci

Institution: Princeton University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy, Basic Energy Sciences, Division of Materials Sciences and Engineering

Awards: Graduate Research Fellowship Program (GRFP), G4474017982