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arXiv · 2505.20000

Correcting noisy quantum gates with shortcuts to adiabaticity

Moallison F. Cavalcante·Bariş Çakmak·Marcus V. S. Bonança·Sebastian Deffner
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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 non-adiabatic 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.

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Moallison F. Cavalcante, Bariş Çakmak, Marcus V. S. Bonança, Sebastian Deffner. 2025-05-26. Correcting noisy quantum gates with shortcuts to adiabaticity. https://doi.org/10.1209/0295-5075%2Fae1da3

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