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arXiv · 1005.2810

Deterministic creation and stabilization of entanglement in circuit QED by homodyne-mediated feedback control

Zhuo Liu·Lulin Kuang·Kai Hu·Luting Xu·Suhua Wei·Lingzhen Guo·Xin-Qi Li
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Abstract

In the solid-state circuit QED system and based on the homodyne measurement in dispersive regime, we demonstrate that a homodyne-current-based feedback can create and stabilize highly entangled two-qubit states in the presence of moderate noisy environment. Particularly, we present an extended analysis for the current-based Markovian feedback, which leads to an improved filtered-current-based feedback scheme. We show that this is essential for us to achieve the desirable control effect in present system.

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Zhuo Liu, Lulin Kuang, Kai Hu, Luting Xu, Suhua Wei, Lingzhen Guo, Xin-Qi Li. 2010-05-17. Deterministic creation and stabilization of entanglement in circuit QED by homodyne-mediated feedback control. https://doi.org/10.1103/physreva.82.032335

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