| Texto completo | |
| Autor(es): |
Diniz, Ciro Micheletti
;
Villas-Boas, Celso J.
;
Santos, Alan C.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | QUANTUM SCIENCE AND TECHNOLOGY; v. 10, n. 2, p. 12-pg., 2025-04-01. |
| Resumo | |
A fast and scalable scheme for multi-qubit resetting in superconducting quantum processors is proposed by exploiting the feasibility of frequency-tunable transmon qubits and transmon-like couplers to engineer a full programmable superconducting erasing head. We demonstrate the emergence of collective effects that lead to a decoherence-free subspace during the erasing process. The presence of such a subspace negatively impacts the device's performance and has been overlooked in other multi-qubit chips. To circumvent this issue and pave the way to the device's scalability, we employ tunable frequency couplers to identify a specific set of parameters that enables us to erase even those states within this subspace, ensuring the simultaneous multi-qubit resetting, verified here for the two-qubit case. In contrast, we show that collectivity effects can also emerge as an ingredient to speed up the erasing process. To end, we offer a proposal to build up integrated superconducting processors that can be efficiently connected to erasure heads in a scalable way. (AU) | |
| Processo FAPESP: | 22/10218-2 - Apagamento de Informação em Computadores Quânticos Baseados em Qubits Supercondutores |
| Beneficiário: | Ciro Micheletti Diniz |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 22/00209-6 - Tecnologias quânticas de segunda geração |
| Beneficiário: | Celso Jorge Villas-Bôas |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |