Lecturer: Dr. Amit Finkler
Affiliation: Stuttgart University
Abstract:
Defects in the solid state are
potentially suitable candidates
for nanoscale sensing and imaging.
Among these, the nitrogen-vacancy
(NV) center in diamond has gained
wide publicity due to its long
coherence time, stability and wide
temperature and frequency ranges
of operation. With recent reports
on the sensing of electron spins
and nuclear spins from single
proteins, we attempt to go one
step further to the realm of
correlated spins. We present
measurements of electron spins in
spin-labeled molecules both at
room temperature and at low
temperature. We show that it is
possible to detect the dipolar
coupling between two spin labels
in a doubly-labeled homopolymer
using a scheme we call "triple
electron-electron resonance". This
is a necessary step towards
sensing of spins in correlated-
electrons systems. Together with
quantum-assisted schemes and
improvements in signal readout, we
offer methods with which we can
tackle some long-standing
questions in condensed matter
physics.