Efficient quantum dot single photon extraction into an optical fiber using a nanophotonic directional coupler

Details Efficient quantum dot single photon extraction into an optical fiber using a nanophotonic directional coupler Efficient quantum dot single photon extraction into an optical fiber using a nanophotonic directional coupler

2011-04-20

arxiv.org/abs/1104.4036v2

Appl. Phys. Lett. 99, 121101 (2011)

Physics

Optics

Scientific paper

We demonstrate a spectrally broadband and effcient technique for collecting photoluminescence from a single InAs quantum dot directly into a standard single mode optical fiber. In this approach, an optical fiber taper waveguide is placed in contact with a suspended GaAs nanophotonic waveguide with embedded quantum dots, forming an effcient and broadband directional coupler with standard optical fiber input and output. Effcient photoluminescence collection over a wavelength range of tens of nanometers is demonstrated, and a maximum collection effciency of 6.05 % (corresponding single photon rate of 3.0 MHz) into a single mode optical fiber was estimated for a single quantum dot exciton.

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