Coherent control of atoms cooled near zero temperature is a unique tool
for measurement of physical quantities with an extraordinary precision. In
this talk I will present the most recent results in this field with particular
emphasis on the application to optical frequency metrology and
gravimetry.
Among several different species, we concentrated our study on strontium
atoms trapped in optical lattices. While fermionic 87Sr atoms have been
considered a good candidate for future optical clocks aiming to below
10-17 relative accuracy, the most abundant 88Sr bosonic isotope find
application in accurate measurements of gravity.
Furthermore, prospects toward remote optical frequency comparisons with
optical fiber links and their possible applications to fundamental physics
tests will also be discussed.
