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arXiv · 0710.3576

Entanglement between charge qubits induced by a common dissipative environment

L. D. Contreras-Pulido·R. Aguado
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Abstract

We study entanglement generation between two charge qubits due to the strong coupling with a common bosonic environment (Ohmic bath). The coupling to the boson bath is a source of both quantum noise (leading to decoherence) and an indirect interaction between qubits. As a result, two effects compete as a function of the coupling strength with the bath: entanglement generation and charge localization induced by the bath. These two competing effects lead to a non-monotonic behavior of the concurrence as a function of the coupling strength with the bath. As an application, we present results for charge qubits based on double quantum dots.

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L. D. Contreras-Pulido, R. Aguado. 2007-10-18. Entanglement between charge qubits induced by a common dissipative environment. https://doi.org/10.1103/physrevb.77.155420

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