Demonstration of quadrature-squeezed surface plasmons in a gold waveguide.
We report on the efficient generation, propagation, and reemission of squeezed long-range surface-plasmon polaritons in a gold waveguide. Squeezed light is used to excite the nonclassical surface-plasmon polaritons, and the reemitted quantum state is fully characterized by complete quantum tomographic reconstruction of the density matrix. We find that the plasmon-assisted transmission of nonclassical light in metallic waveguides can be described by a beam splitter relation. This result is explained theoretically.
Huck
Alexander
A
Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark. alexander.huck@fysik.dtu.dk
Smolka
Stephan
S
Lodahl
Peter
P
Sørensen
Anders S
AS
Boltasseva
Alexandra
A
Janousek
Jiri
J
Andersen
Ulrik L
UL