Title :
Possibilities for a future redefinition of the second
Author :
Gill, P. ; Riehle, F.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
Optical clocks and frequency standards are now challenging the best microwave fountain clocks. This paper reviews the current state of the art in optical clocks. The comparative performance of various clock species is described, and consideration is made of the implications for a future redefinition of the second.
Keywords :
atomic clocks; frequency standards; atomic clock; frequency standards; future redefinition; microwave fountain clock; optical clock; Atom optics; Atomic clocks; Lattices; Standards; Ultrafast optics; Uncertainty; Atomic clocks; optical clocks; optical frequency standards; redefinition of the second;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250864
