Entanglement and Disentanglement in Circuit QED Architectures

Details Entanglement and Disentanglement in Circuit QED Architectures Entanglement and Disentanglement in Circuit QED Architectures

2008-12-22

arxiv.org/abs/0812.4253v1

Physica E 42, 363 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures

Scientific paper

10.1016/j.physe.2009.06.074

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.

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