Phase-enhanced excitations in pumped collective nuclear systems

Quantum Physics [Submitted on 10 Apr 2026] Phase-enhanced excitations in pumped collective nuclear systems Mihai A. Macovei, Fabian Richter, Adriana Pálffy The quantum dynamics of an externally driven ensemble of nuclear two-level systems embedded in a leaky broadband cavity is investigated theoretically. In the considered scenario both the nuclear ensemble and the cavity mode are coherently pumped by two externally applied x-ray electromagnetic fields. When the frequencies of the applied coherent fields are identical, cross-correlations among the existing decay channels increase the nuclear excitation probabilities depending on the phase difference of the applied fields. Our results show that the excited state of the nuclear ensemble may exhibit sub- to super-Poissonian nuclear statistics, demonstrating induced correlations during photon absorption or emission processes. The role of cross-correlations for the superradiant decay and the collective Lamb shift of the ensemble is also investigated. Comments: 9 pages, 5 figures Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2604.09915 [quant-ph]   (or arXiv:2604.09915v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2604.09915 Focus to learn more Submission history From: Adriana Pálffy [view email] [v1] Fri, 10 Apr 2026 21:19:05 UTC (252 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-04 References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)