| Texto completo | |
| Autor(es): |
Cunha, Iann
;
Castelano, Leonardo Kleber
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physics Letters A; v. 454, p. 8-pg., 2022-10-18. |
| Resumo | |
The ability to connect distant qubits plays a role in quantum computing and systems candidates for quantum computation must be able to interact their constituent qubits. We model the quantum dot spin qubits by a spin chain with nearest-neighbors interaction. Within this model, we interact distant qubits by consecutive SWAP gates. The SWAP gate exchanges the information of two different qubits and it is obtained by a time-dependent pulse. Also, we implement the CNOT gate, which is fundamental to universal quantum computation. These gates are applied in a system free from decoherence, which provides a fidelity with high accuracy. Furthermore, we analyze the situation where dephasing, amplitude-damping, and depolarizing types of errors occur in each site of the chain. We found that the order of the SWAP and CNOT gates is important and it can lead to a relevant difference in fidelity when the number of qubits is large.(c) 2022 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 19/09624-3 - Controle ótimo e informação quântica em nanoestruturas semicondutoras |
| Beneficiário: | Leonardo Kleber Castelano |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |