Opto-RF transduction in Er3+:CaWO4
Year: 2024
Type: article
Abstract: We use an erbium doped CaWO4 crystal as a resonant transducer between the RF and optical domains at 12 GHz and 1532 nm respectively. We employ a RF resonator to enhance the spin coupling but keep a single-pass (non-resonant) optical setup. The overall efficiency is low but we carefully characterize the transduction process and show that the performance can be described by two different metrics that we define and distinguish: the electro-optics and the quantum efficiencies. We reach an electro-optics efficiency of -84 dB for 15.7 dBm RF power. The corresponding quantum efficiency is -142 dB for 0.4 dBm optical power. We develop the Schrödinger-Maxwell formalism, well-known to describe light-matter interactions in atomic systems, in order to model the conversion process. We explicitly make the connection with the cavity quantum electrodynamics (cavity QED) approach that are generally used to describe quantum transduction.
Source: Journal of Luminescence
Institutions: Institut polytechnique de Grenoble, Centre National de la Recherche Scientifique, Institut Néel, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, CEA Paris-Saclay - Etablissement de Saclay, Service de Physique de l'État Condensé, CEA Paris-Saclay, Chimie ParisTech - PSL, Université Paris Sciences et Lettres, Institut de Recherche de Chimie Paris, Institut Européen de Chimie et Biologie
Language: Russian
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,640
Funder: Agence Nationale de la Recherche
OpenAlex ID: W4396621451