Giant Rydberg excitons in Cu${}_2$O probed by photoluminescence excitation spectroscopy

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.

arXiv comment11 pages, 4 figures

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Cited by in corpus (13)

• Microwave-optical coupling via Rydberg excitons in cuprous oxide
• Nonlinear Rydberg exciton-polaritons in Cu${}_2$O microcavities
• Polaritonic Quantum Matter
• High resolution nanosecond spectroscopy of even-parity Rydberg excitons in Cu${}_2$O
• Scrutinizing the Debye plasma model: Rydberg excitons unravel the properties of low-density plasmas in semiconductors
• Strong photon interactions from weakly interacting particles
• Microscopic theory of nonlinear phase space filling in polaritonic lattices
• Semiempirical $\text{ab initio}$ modeling of bound states of deep defects in semiconductor quantum technologies
• Classical dynamics and semiclassical analysis of excitons in cuprous oxide
• Quantum light from lossy semiconductor Rydberg excitons
• Distinct terahertz third-harmonic generation of many-body excitonic states
• Rydberg excitons in cuprous oxide: A two-particle system with classical chaos
• Quantum defects of Rydberg excitons in cuprous oxide: A semiclassical spherical model