info:eu-repo/semantics/article
Entanglement generation through the interplay of harmonic driving and interaction in coupled superconducting qubits
Fecha
2017-12-18Registro en:
Gramajo, Ana Laura; Domínguez, Daniel; Sánchez, María José; Entanglement generation through the interplay of harmonic driving and interaction in coupled superconducting qubits; Springer; European Physical Journal B - Condensed Matter; 90; 12; 18-12-2017; 255-265
1434-6028
CONICET Digital
CONICET
Autor
Gramajo, Ana Laura
Domínguez, Daniel
Sánchez, María José
Resumen
We study the manipulation of quantum entanglement by periodic external fields. As an entanglement measure we compute numerically the concurrence of two coupled superconducting qubits both driven by a dc + ac external control parameter. We show that when the driving term of the Hamiltonian commutes with the qubit–qubit interaction term, it is possible to create or destroy entanglement in a controlled way by tuning the system at or near multiphoton resonances. On the other hand, when the driving does not commute with the qubit–qubit interaction, the control and generation of entanglement induced by the driving field is more robust and extended in parameter space, beyond the multiphoton resonances.