Optical investigation of nuclear spin coherence in Tm:YAG

Autor: Fabienne Goldfarb, J.-L. Le Gouët, A. Louchet, T. Brouri, Fabien Bretenaker, Thierry Chanelière, I. Lorgeré, Y. Le Du
Přispěvatelé: Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan)
Rok vydání: 2008
Předmět:
Zdroj: Solid State Sciences
Solid State Sciences, Elsevier, 2008, 10 (10), pp.1374-1378. ⟨10.1016/j.solidstatesciences.2007.12.029⟩
ISSN: 1293-2558
DOI: 10.1016/j.solidstatesciences.2007.12.029
Popis: With all-optical means, the nuclear spin coherence lifetime is measured for the first time in a crystal doped with low-concentration thulium. A novel Raman echo scheme is demonstrated. The hyperfine splitting is varied over a 15 MHz-wide range with the help of an external magnetic field. Over this range the spin coherence lifetime remains close to 350 μs in the electronic ground state. Thulium-doped materials are proved to be interesting substitutes to other rare earth ion-doped crystals as quantum memory candidates, thanks to their convenient wavelength, their adjustable three-level system and their stable and long spin coherence lifetime.
Databáze: OpenAIRE