Nonadiabatic Dynamics of Two Strongly Coupled Nanomechanical Resonator Modes
Nonadiabatic Dynamics of Two Strongly Coupled Nanomechanical Resonator Modes
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DOI：
10.1103/physrevlett.109.037205
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发表时间：
2012-07-17
影响因子：
8.6
通讯作者：
Weig, Eva M.
中科院分区：
文献类型：
--
作者：
Faust, Thomas;Rieger, Johannes;Weig, Eva M.
朗道-齐纳跃迁是量子动力学系统的一个基本概念，在物理学的许多领域都有研究。在这里，我们提出了一个经典的力学模型系统，表现出类似的行为，使用两个反向可调，强耦合模式相同的纳米机械梁谐振器。在绝热极限下，观察到两个模式之间的反交叉，并提取了耦合强度。扫描的耦合区域的初始化模式允许映射的进展，从非绝热到绝热转变的扫描速率的函数。
The Landau-Zener transition is a fundamental concept for dynamical quantum systems and has been studied in numerous fields of physics. Here, we present a classical mechanical model system exhibiting analogous behavior using two inversely tunable, strongly coupled modes of the same nanomechanical beam resonator. In the adiabatic limit, the anticrossing between the two modes is observed and the coupling strength extracted. Sweeping an initialized mode across the coupling region allows mapping of the progression from diabatic to adiabatic transitions as a function of the sweep rate.