Driven electronic bridge processes via defect states in Th 229 -doped crystals

Nickerson BS, Pimon M, Bilous P, Gugler J, Kazakov GA, Sikorsky T, Beeks K, Grueneis A, Schumm T, Pálffy A (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review A American Physical Society

Book Volume: 103

Article Number: 053120

Journal Issue: 5

DOI: 10.1103/PhysRevA.103.053120

Abstract

The electronic defect states resulting from doping Th229 in CaF2 offer a unique opportunity to excite the nuclear isomeric state Th229m at approximately 8 eV via electronic bridge mechanisms. We consider bridge schemes involving stimulated emission and absorption using an optical laser. The role of different multipole contributions, both for the emitted or absorbed photon and nuclear transition, to the total bridge rates are investigated theoretically. We show that the electric dipole component is dominant for the electronic bridge photon. In contradistinction, the electric quadrupole channel of the Th229 isomeric transition plays the dominant role for the bridge processes presented. The driven bridge rates are discussed in the context of background signals in the crystal environment and of implementation methods. We show that inverse electronic bridge processes quenching the isomeric state population can improve the performance of a solid-state nuclear clock based on Th229m.

Authors with CRIS profile

Adriana Palffy-Buß Lehrstuhl für Theoretische Physik

Involved external institutions

Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics DE Germany (DE) Technische Universität Wien / Vienna University of Technology AT Austria (AT)

How to cite

APA:

Nickerson, B.S., Pimon, M., Bilous, P., Gugler, J., Kazakov, G.A., Sikorsky, T.,... Pálffy, A. (2021). Driven electronic bridge processes via defect states in Th 229 -doped crystals. Physical Review A, 103(5). https://dx.doi.org/10.1103/PhysRevA.103.053120

MLA:

Nickerson, Brenden S., et al. "Driven electronic bridge processes via defect states in Th 229 -doped crystals." Physical Review A 103.5 (2021).

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