Tuning the single optical mode spontaneous emission coupling of a quantum dot in a micropost cavity

摘要

Using a micropost cavity, the emission from a quantum dot (QD) is coupled to the discrete fundamental optical mode of the cavity. By adjusting the temperature of the device between 4 and 70 K, the coupling between the QD and the cavity can be tuned. The ratio of the spontaneous emission decay rate between on and off resonance is approximately 4.