| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Fed Sao Carlos, Dept Fis, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Parana, Dept Fis, Caixa Postal 19044, BR-81531980 Curitiba, Parana - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Physics Letters A; v. 415, NOV 5 2021. |
| Web of Science Citations: | 1 |
| Abstract | |
Quantum resources, such as entanglement, steering, and Bell nonlocality, are evaluated for three coupled qubits in the steady-state configuration. We employ the phenomenological master equation and the microscopic master equation to probe such quantum resources, which provide very different results depending on the system configuration. In particular, steering and Bell nonlocality are null within the phenomenological model, while they reach considerable values within the microscopic model. These results show that the phenomenological approach is not able to capture all quantum resources of the system. We also provide an analytical expression for the steady-state and quantum resources of the system composed of three coupled qubits in the zero temperature limit. Such results demonstrate that quantum resources between two qubits are strongly affected by the third qubit in a nontrivial way. (C) 2021 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 19/09624-3 - Optimal quantum control and quantum information in semiconductor nanostructures |
| Grantee: | Leonardo Kleber Castelano |
| Support Opportunities: | Regular Research Grants |