Near-field planar antenna for microwave excitation of paramagnetic quantum emitters

Year: 2026

Authors: Lagomarsino S., Agio M.

Autors Affiliation: Natl Inst Opt Natl Res Council CNR INO, I-50019 Sesto Fiorentino, Italy; Univ Siegen, Lab Nano Opt, D-57072 Siegen, Germany.

Abstract: The concept of a microwave planar antenna for the excitation of dielectric paramagnetic media is proposed. The shape and size of the electrodes are designed for the generation of a uniform magnetic field parallel to the surfaces of a single- or multilayer dielectric, with a specific resonance frequency and bandwidth. One or both electrodes can be semireflective to allow the optical accessibility of the paramagnetic media and, possibly, to enhance the collection efficiency by beaming the optical emission of quantum emitters. This device is particularly useful in optically detected magnetic resonance due to the large bandwidth of the microwave excitation and favorable conditions for optical excitation and detection. Applications are devised especially in vector magnetometry and microwave spectral analysis because of the paramagnetic quantum properties of emitters such as the nitrogenvacancy center in diamond.

Journal/Review: PHYSICAL REVIEW APPLIED

Volume: 26 (3)      Pages from: 34029-1  to: 34029-9

More Information: This work received funding from the European Defence Fund (EDF) under grant agreement 101103417-project ADEQUADE. Funded by the European Union. Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the granting authority can be held responsible for them.
KeyWords: Magnetic field parallel; Microwave excitations; Multilayer dielectrics; Near fields; Optical-; Planar antennas; Quantum emitters; Shape and size; Single layer; Uniform magnetic fields
DOI: 10.1103/rhmf-tf2r