Correcting noisy quantum gates with shortcuts to adiabaticity

¹ Department of Physics, University of Maryland - Baltimore County, Baltimore, MD 21250, USA
² Gleb Wataghin Physics Institute, The University of Campinas - 13083-859, Campinas, São Paulo, Brazil
³ Quantum Science Institute, University of Maryland - Baltimore County, Baltimore, MD 21250, USA
⁴ Department of Physics, Farmingdale State College – SUNY, Farmingdale, NY 11735, USA
⁵ National Quantum Laboratory - College Park, MD 20740, USA

Received: 5 June 2025
Accepted: 10 November 2025

Abstract

Unitary quantum gates constitute the building blocks of quantum computing in the circuit paradigm. In this work, we engineer a locally driven two-qubit Hamiltonian whose instantaneous ground-state dynamics generates the controlled-NOT (CNOT) quantum gate. In practice, quantum gates have to be implemented in finite time, hence nonadiabatic and external noise effects debilitate gate fidelities. Here, we show that counterdiabatic control can restore gate performance with near perfect fidelities even in open quantum systems subject to decoherence.