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arXiv 0905.2593quant-ph
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囚禁离子极化激元量子相变的模拟

Simulation of a quantum phase transition of polaritons with trapped ions

P. A. Ivanov, S. S. Ivanov, N. V. Vitanov, A. Mering, M. Fleischhauer, K. Singer

摘要:

我们提出了一个新的系统,用于模拟集体内部量子比特和声子态的量子相变与线性晶体的囚禁离子。激光与离子的相互作用在激发光谱中产生了一个能隙,这引起了有效的声子-声子排斥和Jaynes-Cummings-Hubbard相互作用。该系统表现出与耦合腔阵列中极化激元的相变相当的特性。捕获的离子允许通过调节轴向捕获频率来容易地调谐跳跃频率,以及通过激光失谐和强度来调节声子-声子排斥。我们提出了一个实验协议,以访问系统的所有可观的,它允许一个获得签名的量子相变,即使有少量的离子。

英文摘要:

We present a novel system for the simulation of quantum phase transitions of collective internal qubit and phononic states with a linear crystal of trapped ions. The laser-ion interaction creates an energy gap in the excitation spectrum, which induces an effective phonon-phonon repulsion and a Jaynes-Cummings-Hubbard interaction. This system shows features equivalent to phase transitions of polaritons in coupled cavity arrays. Trapped ions allow for easy tunabilty of the hopping frequency by adjusting the axial trapping frequency, and the phonon-phonon repulsion via the laser detuning and intensity. We propose an experimental protocol to access all observables of the system, which allows one to obtain signatures of the quantum phase transitions even with a small number of ions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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