Efficient steady state entanglement generation in strongly driven coupled qubits

• URL: http://arxiv.org/abs/2106.12960v1
• Date: Thu, 24 Jun 2021 12:29:51 GMT
• Title: Efficient steady state entanglement generation in strongly driven coupled qubits
• Authors: Ana Laura Gramajo, Daniel Dom\'inguez and Mar\'ia Jos\'e S\'anchez
• Abstract summary: We report on a mechanism to optimize the generation of steady-state entanglement in a system driven by microwave fields. We find that by a proper design of the system parameters and the driving protocol, the two-qubits steady-state concurrence can attain values close to 1 in a wide range of driving amplitudes.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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-St\"uckerlberg 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 from 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-qubits 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.

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