Title :
Ultra-sensitive Whispering Gallery Mode spectroscopy of low loss crystals at cryogenic temperatures
Author :
Goryachev, M. ; Farr, W.G. ; Carvalho, Nelson ; Creedon, D.L. ; LeFloch, J.-M. ; Benmessai, K. ; Tobar, M.E. ; Bushev, P.
Author_Institution :
ARC Centre of Excellence for Eng. Quantum Syst., Univ. of Western, Crawley, WA, Australia
Abstract :
This work provides a summary of application of low-temperature Whispering Gallery Mode spectroscopy to a study of impurity spins in crystalline solids. The method provides an extreme sensitivity that is capable of detecting dilute spins in the most pure fabricated crystals such as sapphire. The study reveals discovery of a number of new impurities in sapphire, quartz and YSO as well as some unexpected phenomena in these systems. Regimes of quantum strong coupling are demonstrated in a number of crystals.
Keywords :
chromium; erbium; impurities; paramagnetic resonance; quartz; sapphire; whispering gallery modes; yttrium compounds; Al2O3:Cr; SiO2; Y2SiO5:Er; crystalline solids; impurities; impurity spins; quantum strong coupling; quartz; sapphire crystals; ultrasensitive whispering gallery mode spectroscopy; Couplings; Crystals; Impurities; Ions; Resonant frequency; Spectroscopy; Whispering gallery modes; Whispering Gallery Mode; doping; impurity ions; spectroscopy; strong coupling;
Conference_Titel :
Frequency Control Symposium (FCS), 2014 IEEE International
Conference_Location :
Taipei
DOI :
10.1109/FCS.2014.6859941
