Laurent Olislager, Wakana Kubo, Takuo Tanaka, Simona Ungureanu, Renaud A. L. Vallée, Branko Kolaric, Philippe Emplit, Serge Massar
October 6, 2015
We report on the design of two plasmonic nanostructures and the propagation of frequency-bin entangled photons through them. The experimental findings clearly show the robustness of frequency-bin entanglement, which survives after interactions with both a hybrid plasmo-photonic structure, and a nano-pillar array. These results confirm that quantum states can be encoded into the collective motion of a many-body electronic system without demolishing their quantum nature, and pave the way towards applications of plasmonic structures in quantum information.