TY - JOUR
T1 - Controlling the emission of quantum dots embedded in photonic crystal nanocavity by manipulating Q-factor and detuning
AU - Nakamura, Tatsuya
AU - Asano, Takashi
AU - Kojima, Kazunobu
AU - Kojima, Takanori
AU - Noda, Susumu
PY - 2011/12/14
Y1 - 2011/12/14
N2 - We investigated the modulation of the Purcell effect by controlling the Q-factor and detuning in a quantum-dot-nanocavity coupled system. The Q-factor and detuning are controlled independently using a nanocavity and a waveguide reflector formed in a two-dimensional photonic crystal (PC) slab, in combination with a newly developed nitrogen adsorption/desorption method that enables local control of the refractive index. For example, we observed that the emission of a quantum dot via a cavity mode was increased by 3.3 times when the Q-factor was changed from 3500 to 6900 while keeping the detuning fixed. The dependence of the Purcell effect on the Q-factor has thus been directly observed.
AB - We investigated the modulation of the Purcell effect by controlling the Q-factor and detuning in a quantum-dot-nanocavity coupled system. The Q-factor and detuning are controlled independently using a nanocavity and a waveguide reflector formed in a two-dimensional photonic crystal (PC) slab, in combination with a newly developed nitrogen adsorption/desorption method that enables local control of the refractive index. For example, we observed that the emission of a quantum dot via a cavity mode was increased by 3.3 times when the Q-factor was changed from 3500 to 6900 while keeping the detuning fixed. The dependence of the Purcell effect on the Q-factor has thus been directly observed.
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U2 - 10.1103/PhysRevB.84.245309
DO - 10.1103/PhysRevB.84.245309
M3 - Article
AN - SCOPUS:84855464984
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 24
M1 - 245309
ER -