Engineering two-mode entangled states between two superconducting resonators by dissipation

Peng-Bo Li; Shao-Yan Gao; Fu-Li Li

doi:10.1103/PhysRevA.86.012318

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Engineering two-mode entangled states between two superconducting resonators by dissipation

Peng-Bo Li, Shao-Yan Gao, Fu-Li Li

DOI 10.1103/PhysRevA.86.012318 · Physical Review A

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Abstract

We present an experimental feasible scheme to synthesize two-mode continuous-variable entangled states of two superconducting resonators that are interconnected by two gap-tunable superconducting qubits. We show that, with each artificial atom suitably driven by a bichromatic microwave field to induce sidebands in the qubit-resonator coupling, the stationary state of the photon fields in the two resonators can be cooled and steered into a two-mode squeezed vacuum state via a dissipative quantum dynamical process, while the superconducting qubits remain in their ground states. In this scheme the qubit decay plays a positive role and can help drive the system to the target state, which thus converts a detrimental source of noise into a resource.