Entanglement and Disentanglement in Circuit QED Architectures

We propose a protocol for creating entanglement within a dissipative circuit QED network architecture that consists of two electromagnetic circuits (cavities) and two superconducting qubits. The system interacts with a quantum environment, giving rise to decoherence and dissipation. We discuss the p...

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Bibliographic Details
Published inarXiv.org
Main Authors Zueco, David, Reuther, Georg M, Hänggi, Peter, Kohler, Sigmund
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.12.2008
Subjects
Decay
Holes
Physics - Mesoscale and Nanoscale Physics
Quantum electrodynamics
Quantum entanglement
Qubits (quantum computing)
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Summary:We propose a protocol for creating entanglement within a dissipative circuit QED network architecture that consists of two electromagnetic circuits (cavities) and two superconducting qubits. The system interacts with a quantum environment, giving rise to decoherence and dissipation. We discuss the preparation of two separate entangled cavity-qubit states via Landau-Zener sweeps, after which the cavities interact via a tunable "quantum switch" which is realized with an ancilla qubit. Moreover, we discuss the decay of the resulting entangled two-cavity state due to the influence of the environment, where we focus on the entanglement decay.
ISSN:2331-8422
DOI:10.48550/arxiv.0812.4253