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arXiv · 1406.4899

Non-Markovian qubit dynamics in a circuit-QED setup

P. C. Cárdenas·M. Paternostro·F. L. Semião
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Abstract

We consider a circuit-QED setup that allows the induction and control of non-Markovian dynamics of a qubit. Non-Markovianity is enforced over the qubit by means of its direct coupling to a bosonic mode which is controllably coupled to other qubit-mode system. We show that this configuration can be achieved in a circuit-QED setup consisting of two initially independent superconducting circuits, each formed by one charge qubit and one transmission-line resonator, which are put in interaction by coupling the resonators to a current-biased Josephson junction. We solve this problem exactly and then proceed with a thorough investigation of the emergent non-Markovianity in the dynamics of the qubits. Our study might serve the context for a first experimental assessment of non-Markovianity in a multi-element solid-state device.

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P. C. Cárdenas, M. Paternostro, F. L. Semião. 2015-03-12. Non-Markovian qubit dynamics in a circuit-QED setup. https://doi.org/10.1103/physreva.91.022122

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