Down-conversion processes in ab initio nonrelativistic quantum electrodynamics

Autor: Davis M. Welakuh, Michael Ruggenthaler, Mary-Leena M. Tchenkoue, Heiko Appel, Angel Rubio
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Physical Review Research, Vol 3, Iss 3, p 033067 (2021)
Druh dokumentu: article
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.3.033067
Popis: The availability of efficient photon sources with specific properties is important for quantum-technological applications. However, the realization of such photon sources is often challenging and hence alternative perspectives that suggest different means to enhance desired properties while suppressing detrimental processes are valuable. In this work we highlight that ab initio simulations of coupled light-matter systems can provide such alternative avenues. We show for a simple model of a quantum ring that by treating light and matter on equal footing, we can create and enhance pathways for down-conversion processes. By changing the matter subsystem as well as the photonic environment in experimentally feasible ways, we can engineer hybrid light-matter states that enhance at the same time the efficiency of the down-conversion process and the nonclassicality of the created photons. Furthermore, we show that this also leads to a faster down-conversion, potentially avoiding detrimental decoherence effects.
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