Work

Rabi and Ramsey oscillations of a Majorana qubit in a quantum dot-superconductor array

Year: 2025

Type: article

Abstract: The authors address here the latest experimental platform for the topological Majorana qubit -- the artificial Kitaev chain -- and propose a new experimental direction to establish the topological qubit by evaluating its realistic qubit performance in Rabi and Ramsey oscillation experiments, including dephasing time, quality factor, leakage, and other key metrics. This work demonstrates that the qubit performance in the current experimental platform exhibits significantly enhanced coherence compared to conventional semiconductor quantum dot based charge qubits without superconductors, marking a crucial step toward realizing the first topological Majorana qubit in a solid-state system.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.111.075416

Authors: Haining Pan, Sankar Das Sarma, Chun-Xiao Liu

Institutions: Rutgers, The State University of New Jersey, Joint Quantum Institute, University of Maryland, College Park, Delft University of Technology

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: University of Maryland, Office of Naval Research

Awards: G7923737513, G8876996369