| Texto completo | |
| Autor(es): |
Gomes, Paulo Freitas
;
Novaes, Marcel
;
Parisio, Fernando
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW A; v. 108, n. 3, p. 7-pg., 2023-09-13. |
| Resumo | |
We investigate the entanglement in the ground state of systems comprising two and three qubits with random interactions. Since the Hamiltonians also contain deterministic one-body terms, by varying the interaction strength, one can continuously interpolate between deterministic separable eigenstates and fully random entangled eigenstates, with nontrivial intermediate behavior. Entanglement strongly depends on the underlying topology of the interaction among the qubits. Since W states correspond to a zero-measure set as compared to the set of Greenberger-Horne-Zeilinger (GHZ) states, in all investigated cases the ground states are of the latter type. However, for a certain class of interactions (nonseparable collective potential) high GHZ entanglement is produced, while for fully separable pairwise interactions the marginal GHZ ground states concentrate in the vicinity of W states. (AU) | |
| Processo FAPESP: | 21/06535-0 - Internet quântica com memórias atômicas |
| Beneficiário: | Daniel Felinto Pires Barbosa |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |