Putting mechanics into circuit quantum electrodynamics

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• 作者：Nicolas Didier ; ^{nicolas.didier@sns.it} ; Rosario Fazio ^fazio@sns.it
• 关键词：Nano-electromechanical systems ; Superconducting nanocircuits ; Microwave cavity ; Quantum bit ; Entanglement ; Quantum master equation
• 刊名：Comptes Rendus Physique
• 出版年：2012
• 期刊代码：117_16310705
• 类别：ms
• 出版时间：June, 2012
• 卷：13
• 期：5
• 页码：470-479
• 文件大小：728 K

摘要

We review the use of mechanical oscillators in circuit quantum electrodynamics. The capacitive coupling of nano-electromechanical systems with quantum bits and superconducting microwave resonators gives rise to a rich quantum physics involving electrons, photons and phonons. We focus in particular on the linear coupling between a mechanical oscillator and a microwave resonator and present the quantum dynamics that stems from the phonotonic Josephson junction. The microwave cavity turns out to be a powerful device to detect quantum phonon states and manipulate entangled states between phonons and photons.