We describe
an
appro
ach to the study of neutrino m
asses th
at combines qu
antum optics techniques with r
adi
ation detectors to obt
ain unprecedented sensitivity. With it the se
arch for M
ajor
an
a neutrino m
asses down to
align=center border=0 SRC=/images/glyphs/BQ1.GIF>10 meV will become
accessible. The experiment
al technique uses the possibility of individu
ally detecting
Ba+-ions in the fin
al st
ate of
136Xe double-bet
a dec
ay vi
a reson
ant excit
ation with
a set of l
asers
aimed
at
a specific loc
ation in
a l
arge Time Projection Ch
amber. The specificity of the
atomic levels provides t
agging
and, together with more tr
adition
al event recognition p
ar
ameters, gre
atly suppresses r
adio
active b
ackgrounds.