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arXiv 2603.22656quant-ph
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原子偶极-偶极相互作用对场-物质相互作用相图的影响

Effect of the Atomic Dipole-Dipole Interaction on the Phase Diagrams of 2-Level Matter-Field Systems

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México(墨西哥国立自治大学核科学研究所);Facultad de Ciencias, Universidad Nacional Autónoma de México(墨西哥国立自治大学理学院)

S. Cordero, E. Nahmad-Achar, O. Castaños, R. López-Peña

AI总结:

研究有限粒子数下,包含原子偶极-偶极相互作用的双能级Dicke模型量子相图,探讨量子相变在原子人口和光子数波动中的表现,以及弱物质-场相互作用下激发态零光子人口条件概率分布中的信息承载。

摘要:

量子信息度量被用来研究包含原子偶极-偶极相互作用的双能级Dicke模型的量子相图,对于有限数量的粒子,包括旋转波近似和不包括的情况,后者导致激发总数的守恒在第一种情况下和其奇偶性在一般情况下。我们展示量子相变可以在原子人口和光子数的波动中被观测到,并且当物质-场相互作用较弱时,激发态零光子人口的条件概率分布携带量子相变的信息。

英文摘要:

Quantum information measures are used to study the quantum phase diagrams of a two-level extended Dicke model, including the particle dipole-dipole interaction, for a finite number of particles. This is treated both with and without the rotating-wave approximation. Differences are noted between these new diagrams and those obtained in the corresponding variational treatment. The standard deviation of the population inversion operator and the correlation of the number of parti- cles occupying the ground and excited levels, carry most of the information of the regions where a phase transition takes place. The correlation coefficient of the number of photons and the number of particles occupying the excited level yields information of the sudden changes in the behavior of the ground state of the composite system.

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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