Quantum nano

Semiconducting carbon nanotubes can play host to light-matter quasi-partic¬les generated electrically within. Scientists Heidelberg University, Germany and the University of St Andrews, UK used light-emitting and extremely stable transistors to achieve strong light-matter coupling that produced exciton-polaritons. Such entities might be used in new light sources, such as electrically pumped polariton lasers. Because of the extreme stability and high conductivity, current densities and thus polariton densities are orders of magnitude higher than previously reported values for such systems, the team reports.