arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2601.19986quant-phcond-mat.stat-mech
收藏

双光子过程中的超辐射相是有限尺寸效应

Superradiant Phase is a Finite Size Effect in Two-photon Processes

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México(墨西哥国立自治大学核科学研究所);CAMTP - Center for Applied Mathematics and Theoretical Physics, University of Maribor(马里博尔大学应用数学与理论物理中心)

Fabrizio Ramírez, David Villaseñor, Nahum Vázquez, Jorge G. Hirsch

AI总结:

研究揭示双光子过程中的超辐射相实际上是有限尺寸效应,而非热力学相,通过分析和数值计算证明其随系统规模增大而消失,光谱塌缩仍存在。

摘要:

双光子光-物质相互作用表现出如光谱塌缩等独特特征。双光子迪克模型已被报道表现出超辐射相,这在量子应用中可能具有用处。本文显示,这种超辐射相并非真正的热力学相,而是一种有限尺寸效应。通过分析和数值分析相结合,我们证明超辐射区域随着系统尺寸的增加而缩小,并在热力学极限下消失,而光谱塌缩仍然存在。我们的结果澄清了双光子系统中超辐射条件的本质,并限制了其在量子平台中的实现。

英文摘要:

Two-photon light-matter interactions exhibit distinctive features such as spectral collapse. The two-photon Dicke model has been reported to exhibit a superradiant phase which could be useful in quantum applications. Here we show that this superradiant phase is not a genuine thermodynamic phase but a finite-size effect. Combining analytical and numerical analyses, we demonstrate that the superradiant region shrinks with increasing system size and disappears in the thermodynamic limit, while spectral collapse remains. Our results clarify the nature of superradiant conditions in two-photon systems and constrain its realization in quantum platforms.

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。

↑