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Q: Fachverband Quantenoptik und Photonik
Q 37: Quantum Optics (Miscellaneous) V
Q 37.4: Talk
Wednesday, March 16, 2022, 15:00–15:15, Q-H14
Higher-order photon statistics as a new tool to reveal hidden excited states in a plasmonic cavity — •Philipp Stegmann1, Satyendra Nath Gupta2, Gilad Haran2, and Jianshu Cao1 — 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA — 2Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 761001, Israel
Among the best known quantities obtainable from photon correlation measurements are the g(m) correlation functions. Here, we introduce a new procedure to evaluate these correlation functions based on higher-order factorial cumulants CF,m which integrate over the time dependence of the correlation functions, i.e., summarize the available information at different time spans [1]. In a systematic manner, the information content of higher-order correlation functions as well as the distribution of photon waiting times is taken into account. Our procedure greatly enhances the sensitivity for probing correlations and, moreover, is robust against a limited counting efficiency and time resolution in experiment. It can be applied even in case g(m) is not accessible at short time spans. We use the new evaluation scheme to analyze the photon emission of a plasmonic cavity coupled to a quantum dot. We derive criteria which must hold if the system can be described by a generic Jaynes-Cummings model. A violation of the criteria is explained by the presence of an additional excited quantum dot state. [1] P. Stegmann, S. N. Gupta, G. Haran, and J. Cao, arXiv:2112.02201 (2021).