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

fYear

2014

fDate

19-22 May 2014

Firstpage

1

Lastpage

3

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium (FCS), 2014 IEEE International

Conference_Location

Taipei

Type

conf

DOI

10.1109/FCS.2014.6859941

Filename

6859941