Singlet-Only Always-On Gapless Exchange Qubits with Baseband Control

Author(s): Nathan L. Foulk, Silas Hoffman, Katharina Laubscher, and Sankar Das Sarma We propose a singlet-only always-on gapless exchange (SAGE) spin qubit that encodes a single qubit in the spins of four electrons while allowing universal baseband control. While conventional exchange-only qubits suffer from magnetic-field-gradient-induced leakage and coherent errors due to local nu… [Phys. Rev. Lett. 135, 106202] Published Thu Sep 04, 2025

http://link.aps.org/doi/10.1103/j1hn-k5m8 link.aps.org

RSS Hunter • Sep 4, 2025