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Chip‐Compatible Quantum Plasmonic Launcher
Author(s) -
Chiang ChinCheng,
Bogdanov Simeon I.,
Makarova Oksana A.,
Xu Xiaohui,
Saha Soham,
Shah Deesha,
Martin Zachariah O.,
Wang Di,
Lagutchev Alexei S.,
Kildishev Alexander V.,
Boltasseva Alexandra,
Shalaev Vladimir M.
Publication year - 2020
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.202000889
Subject(s) - photonics , optoelectronics , plasmon , quantum , photon , materials science , chip , realization (probability) , quantum optics , spontaneous emission , physics , optics , computer science , telecommunications , quantum mechanics , laser , statistics , mathematics
Integrated on‐demand single‐photon sources are critical for the implementation of photonic quantum information processing systems. To enable practical quantum photonic devices, the emission rates of solid‐state quantum emitters need to be substantially enhanced and the emitted signal must be directly coupled to an on‐chip circuitry. The photon emission rate speed‐up is best achieved via coupling to plasmonic antennas, while on‐chip integration can be realized by directly coupling emitters to photonic waveguides. The realization of practical devices requires that both the emission speed‐up and efficient out‐coupling are achieved in a single architecture. Here, a novel architecture is proposed that combines chip compatibility with high radiative emission rates—a quantum plasmonic launcher. The proposed launchers contain single nitrogen‐vacancy (NV) centers in nanodiamonds as quantum emitters that offer record‐high average fluorescence lifetime shortening factors of about 7000 times. Nanodiamonds with single NVs are sandwiched between two silver films that couple more than half of the emission into in‐plane propagating surface plasmon polaritons. This simple, compact, and scalable architecture represents a crucial step toward the practical realization of high‐speed on‐chip quantum networks.