摘要翻译:
我们研究了强耦合于加宽谐波模的对称二能级系统的动力学。将该问题映射到具有峰值谱密度的自旋玻色子模型上,我们证明了在任意失谐和有限温度下,当振子的q因子较大时,如何得到解析解。一般情况下,由于与振子的纠缠,两能级粒子的振荡频率为{\\em}或更多。我们的近似解析解与在非相互作用blip近似下得到的数值预测很好地吻合。
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英文标题:
《Dynamics of a qubit coupled to a broadened harmonic mode at finite
detuning》
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作者:
F. Nesi, M. Grifoni, and E. Paladino
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Physics 物理学
二级分类:Other Condensed Matter 其他凝聚态物质
分类描述:Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
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英文摘要:
We study the dynamics of a symmetric two-level system strongly coupled to a broadened harmonic mode. Upon mapping the problem onto a spin-boson model with peaked spectral density, we show how analytic solutions can be obtained, at arbitrary detuning and finite temperatures, in the case of large Q-factors of the oscillator. In general {\em two} or more oscillation frequencies of the two-level particle are observed as a consequence of the entanglement with the oscillator. Our approximated analytical solution well agrees with numerical predictions obtained within the non-interacting blip approximation.
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PDF链接:
https://arxiv.org/pdf/706.4029