21 February 2013 Spontaneous emission control of single quantum dots by electrostatic tuning of a double-slab photonic crystal cavity
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Abstract
We report the electromechanical control of spontaneous emission of single InAs quantum dots (QDs) embedded in wavelength-tunable double-membrane photonic crystal cavities (PCC). The tuning is achieved by modulating the distance between two parallel GaAs membranes by applying electrostatic forces across a p-i-n diode under reverse bias. The spontaneous emission rate of single dots has been modified by over a factor of ten, tuning the cavity reversibly between on- and off-resonant conditions without altering the emission energy of the dots. We also discuss a possible approach to integrate the double membrane structure with ridge waveguides, for the transmission of light within a photonic chip.
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Leonardo Midolo, Francesco Pagliano, Thang B. Hoang, Tian Xia, Frank W. M. van Otten, Lianhe Li, Edmund H. Linfield, Matthias Lermer, Sven Höfling, Andrea Fiore, "Spontaneous emission control of single quantum dots by electrostatic tuning of a double-slab photonic crystal cavity", Proc. SPIE 8632, Photonic and Phononic Properties of Engineered Nanostructures III, 86320P (21 February 2013); doi: 10.1117/12.2001611; https://doi.org/10.1117/12.2001611
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