| Texto completo | |
| Autor(es): |
Solak, Luiz O. R.
;
Rossatto, Daniel Z.
;
Villas-Boas, Celso J.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW A; v. 109, n. 6, p. 10-pg., 2024-06-27. |
| Resumo | |
Quantum gates are the building blocks of quantum circuits, which in turn are the cornerstones of quantum information processing. In this work, we theoretically investigate a single-step implementation of both a universal two- (CNOT) and three-qubit (quantum Fredkin) gates in a cross-cavity setup coupled to a A-type three-level atom. Within a high-cooperativity regime, the system exhibits an atomic-state-dependent n-phase gate involving the two-mode single-photon bright and dark states of the input light pulses. This allows for the controlled manipulation of light states by the atom and vice versa. Our results indicate these quantum gates can be implemented with high probability of success using the state-of-the-art parameters, either for the weak- or strong-coupling regime, where the quantum interference is due to an electromagnetically induced transparencylike phenomenon and the Autler-Townes splitting, respectively. This work not only paves the way for implementing quantum gates in a single step using simple resources, thus avoiding the need to chain basic gates together in a circuit, but it also endorses the potential of cross-cavity systems for realizing universal quantum computation. (AU) | |
| Processo FAPESP: | 22/00209-6 - Tecnologias quânticas de segunda geração |
| Beneficiário: | Celso Jorge Villas-Bôas |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 19/11999-5 - Efeitos coletivos em sistemas atômicos, spins nucleares e eletrodinâmica quântica de cavidades |
| Beneficiário: | Celso Jorge Villas-Bôas |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 18/22402-7 - Efeitos não lineares em eletrodinâmica quântica de cavidades de dois modos |
| Beneficiário: | Celso Jorge Villas-Bôas |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |