Journal
APPLIED PHYSICS LETTERS
Volume 113, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5045727
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Funding
- National Science Foundation [ECCS1508897]
- Office of Naval Research ONR [N000141410612]
- Air Force Office of Scientific Research (AFOSR) [271470871D]
- Physics Frontier Center at the Joint Quantum Institute
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Coupling single photon emitters to surface plasmons provides a versatile ground for on chip quantum photonics. However, achieving good coupling efficiency requires precise alignment of both the position and dipole orientation of the emitter relative to the plasmonic mode. We demonstrate coupling of single emitters in the 2-D semiconductor, WSe2 self-aligned with propagating surface plasmon polaritons in silver-air-silver, metal-insulator-metal wave-guides. The waveguide produces strain induced defects in the monolayer which are close to the surface plasmon mode with favorable dipole orientations for optimal coupling. We measure an average enhancement in the rate of spontaneous emission by a factor of 1.89 for coupling the single defects to the plasmonic waveguide. This architecture provides an efficient way of coupling single photon emitters to propagating plasmons which is an important step towards realizing active plasmonic circuits on chip. Published by AIP Publishing.
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