Work

Robust tripartite entanglement generation via correlated noise in spin qubits

Year: 2026

Type: article

Abstract: We investigate the generation of genuine tripartite entanglement in a triangular spin-qubit system due to spatially correlated noise. In particular, we demonstrate how the formation of a highly entangled dark state, a W state, enables robust, long-lived tripartite entanglement. Surprisingly, we find that environmentally induced coherent coupling does not play a crucial role in sustaining this entanglement. This contrasts sharply with the two-qubit case, where the induced coupling significantly influences the entanglement dynamics. Furthermore, we explore two promising approaches to enhance the tripartite entanglement by steering the system toward the dark state: postselection and coherent driving. Our findings offer a robust method for generating high-fidelity tripartite entangled states with potential applications in quantum computation.

Source: Physical Review Research

DOI: 10.1103/5mr9-84qh

Authors: Sander Driessen, Ji Zou, Even Thingstad, Jelena Klinovaja, Daniel Loss

Institutions: University of Basel, Eindhoven University of Technology, King Fahd University of Petroleum and Minerals

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, King Fahd University of Petroleum and Minerals