Author(s): Josu Etxezarreta Martinez, Paul Schnabl, Javier Oliva del Moral, Reza Dastbasteh, Pedro M. Crespo, and Ruben M. Otxoa Tailoring quantum-error-correction codes (QECCs) to biased noise has demonstrated significant benefits. However, most of the prior research on this topic has focused on code-capacity noise models. Furthermore, a no-go theorem prevents the construction of controlled- not ( cnot ) gates for two-level qub… [Phys. Rev. Applied 25, 014021] Published Fri Jan 09, 2026