Abstract
We have employed Bloch-wave engineering to realize submicron diameter high quality factor micropillars (MPs). The design features a tapered cavity in which the fundamental Bloch mode is subject to an adiabatic transition to match the Bragg mirror Bloch mode. The resulting reduced scattering loss leads to record-high vacuum Rabi splitting of the strong coupling in MPs with modest oscillator strength quantum dots. A quality factor of 13 600 and a splitting of with an estimated visibility of 0.41 are observed for a small mode volume MP with a diameter of 850 nm.
- Received 27 June 2011
DOI:https://doi.org/10.1103/PhysRevLett.108.057402
© 2012 American Physical Society