1305.4951 (Shuo Sun et al.)

Strain tuning of a quantum dot strongly coupled to a photonic crystal
cavity    [PDF]

Shuo Sun, Hyochul Kim, Glenn S. Solomon, Edo Waks

We demonstrate reversible strain-tuning of a quantum dot strongly coupled to a photonic crystal cavity. We observe an average redshift of 0.45 nm for quantum dots located inside the cavity membrane, achieved with an electric field of 15 kV/cm applied to a piezo-electric actuator. Using this technique, we demonstrate the ability to tune a quantum dot into resonance with a photonic crystal cavity in the strong coupling regime, resulting in a clear anti-crossing. The bare cavity resonance is less sensitive to strain than the quantum dot and shifts by only 0.078 nm at the maximum applied electric field.

View original: http://arxiv.org/abs/1305.4951