Lecturer: Prof. Alex Hayat
Affiliation: Department of Electrical Engineering,
Israel Institute of Technology - Technion
Abstract:
Interest in the superconducting proximity
effect has been reinvigorated recently by
novel optoelectronic applications as well as
by the possible emergence of the elusive
Majorana fermion. We produced high-
temperature proximity-induced
superconductivity in topological insulators,
using our new mechanical bonding
technique. We demonstrated hybrid high-
Tc-superconductor-semiconductor tunnel
junctions with bulk semiconductors and
with semiconductor quantum wells. We
showed theoretically that superconductor-
semiconductor devices can produce
entangled photon pairs when a proximity
layer is induced in semiconductor
nanostructures.
Exciton-polaritons that emerge from strong
coupling of photons to excitons in
semiconductor microcavities have an
extremely small effective mass, and can
therefore condense at very high
temperatures. We demonstrated temporal
long-range off-diagonal order in dynamic
polariton condensates with large nonlinear
phase shifts. We showed a dynamic Stark
shift of exciton-polaritons which provides a
fast-switching technique for ultrafast
circuits, for generation of optical lattices,
and for quantum tomography on polariton
condensates.