Davanço, M. and Rakher, M. T. and Wegscheider, Werner and Schuh, Dieter and Badolato, A. and Srinivasan, K.
Efficient quantum dot single photon extraction into an optical fiber using a nanophotonic directional coupler.
Applied Physics Letters 99 (12), p. 121101.
Other URL: http://link.aip.org/link/?APL/99/121101/1
We demonstrate a spectrally broadband and efficient technique for collecting emission 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 a broadband directional coupler with standard optical fiber input and output. Efficient photoluminescence collection over a wavelength range of tens of nanometers is demonstrated, and a maximum collection efficiency of 6% (corresponding single photon rate of 3.0 MHz) into a single mode optical fiber is estimated for a single quantum dot exciton.
|Institutions:|| Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Keywords:||excitons; gallium arsenide; III-V semiconductors; indium compounds; nanophotonics; optical directional couplers; optical fibre couplers; photoluminescence; quantum dots|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Partially|
|Deposited On:||12 Dec 2011 08:22|
|Last Modified:||12 Dec 2011 08:22|