Towards high-cooperativity strong coupling of a quantum dot in a tunable microcavity
Abstract
We investigate the strong-coupling regime of a self-assembled quantum dot in a tunable microcavity with dark-field laser spectroscopy. The high quality of the spectra allows the line shapes to be analyzed revealing subtle quantum interferences. Agreement with a model calculation is achieved only by including exciton dephasing which reduces the cooperativity from a bare value of 9.0 to the time-averaged value 5.5. In the pursuit of high cooperativity, besides a high Q and low mode-volume cavity, we demonstrate that equal efforts need to be taken towards lifetime-limited emitter linewidths.
- Publication:
-
Physical Review B
- Pub Date:
- July 2015
- DOI:
- 10.1103/PhysRevB.92.045302
- arXiv:
- arXiv:1504.06223
- Bibcode:
- 2015PhRvB..92d5302G
- Keywords:
-
- 42.50.Pq;
- 42.50.-p;
- 42.50.Ex;
- 68.65.Hb;
- Cavity quantum electrodynamics;
- micromasers;
- Quantum optics;
- Optical implementations of quantum information processing and transfer;
- Quantum dots;
- Quantum Physics;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- Phys. Rev. B 92, 045302, 2015