Journal
PHYSICAL REVIEW B
Volume 84, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.245309
Keywords
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Core Research for Evolutional Science and Technology of the Japan Science and Technology Agency
- Grants-in-Aid for Scientific Research [20226002] Funding Source: KAKEN
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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
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