Laser oscillation in a strongly coupled single quantum dot-nanocavity system

Details Laser oscillation in a strongly coupled single quantum dot-nanocavity system Laser oscillation in a strongly coupled single quantum dot-nanocavity system

2009-05-19

arxiv.org/abs/0905.3063v2

Physics

Condensed Matter

Other Condensed Matter

12 pages, 4 figures

Scientific paper

Strong coupling of photons and materials in semiconductor nanocavity systems has been investigated because of its potentials in quantum information processing and related applications, and has been testbeds for cavity quantum electrodynamics (QED). Interesting phenomena such as coherent exchange of a single quantum between a single quantum dot and an optical cavity, called vacuum Rabi oscillation, and highly efficient cavity QED lasers have been reported thus far. The coexistence of vacuum Rabi oscillation and laser oscillation appears to be contradictory in nature, because the fragile reversible process may not survive in laser oscillation. However, recently, it has been theoretically predicted that the strong-coupling effect could be sustained in laser oscillation in properly designed semiconductor systems. Nevertheless, the experimental realization of this phenomenon has remained difficult since the first demonstration of the strong-coupling, because an extremely high cavity quality factor and strong light-matter coupling are both required for this purpose. Here, we demonstrate the onset of laser oscillation in the strong-coupling regime in a single quantum dot (SQD)-cavity system. A high-quality semiconductor optical nanocavity and strong SQD-field coupling enabled to the onset of lasing while maintaining the fragile coherent exchange of quanta between the SQD and the cavity. In addition to the interesting physical features, this device is seen as a prototype of an ultimate solid state light source with an SQD gain, which operates at ultra-low power, with expected applications in future nanophotonic integrated systems and monolithic quantum information devices.

Affiliated with

Also associated with

No associations

Rating

Laser oscillation in a strongly coupled single quantum dot-nanocavity system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Laser oscillation in a strongly coupled single quantum dot-nanocavity system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser oscillation in a strongly coupled single quantum dot-nanocavity system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-699674