Giant Rydberg excitons in Cu$_{2}$O probed by photoluminescence excitation spectroscopy

• URL: http://arxiv.org/abs/2105.07942v1
• Date: Mon, 17 May 2021 15:33:12 GMT
• Title: Giant Rydberg excitons in Cu$_{2}$O probed by photoluminescence excitation spectroscopy
• Authors: Marijn A. M. Versteegh, Stephan Steinhauer, Josip Bajo, Thomas Lettner, Ariadna Soro, Alena Romanova, Samuel Gyger, Lucas Schweickert, Andr\'e Mysyrowicz and Val Zwiller
• Abstract summary: We show photoluminescence excitation spectroscopy as a method to probe transition probabilities from various excitonic states in cuprous oxide. We show giant Rydberg excitons at $T=38$ mK with principal quantum numbers up to $n=30$, corresponding to a calculated diameter of 3 $mu$m.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Rydberg excitons are, with their ultrastrong mutual interactions, giant optical nonlinearities, and very high sensitivity to external fields, promising for applications in quantum sensing and nonlinear optics at the single-photon level. To design quantum applications it is necessary to know how Rydberg excitons and other excited states relax to lower-lying exciton states. Here, we present photoluminescence excitation spectroscopy as a method to probe transition probabilities from various excitonic states in cuprous oxide, and we show giant Rydberg excitons at $T=38$ mK with principal quantum numbers up to $n=30$, corresponding to a calculated diameter of 3 $\mu$m.

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