info:eu-repo/semantics/article
Efficient steady-state-entanglement generation in strongly driven coupled qubits
Fecha
2021-09Registro en:
Gramajo, Ana Laura; Domínguez, Daniel; Sánchez, María José; Efficient steady-state-entanglement generation in strongly driven coupled qubits; American Physical Society; Physical Review A; 104; 3; 9-2021; 324101-324105
2469-9926
2469-9934
CONICET Digital
CONICET
Autor
Gramajo, Ana Laura
Domínguez, Daniel
Sánchez, María José
Resumen
We report on a mechanism to optimize the generation of steady-state entanglement in a system of coupled qubits driven by microwave fields. Due to the interplay between Landau-Zener-Stückelberg-Majorana pumping involving three levels and a subsequent fast relaxation channel, which is activated by tuning the qubits-reservoir couplings, a maximally entangled state can be populated. This mechanism does not require the fine tuning of multiphoton resonances but depends on the sign of the qubit-qubit coupling. In particular, we find that by a proper design of the system parameters and the driving protocol, the two-qubit steady-state concurrence can attain values close to 1 in a wide range of driving amplitudes. Our results may be useful to gain further insight into entanglement control and manipulation in dissipative quantum systems exposed to strong driving.