A coherent single-hole spin in a semiconductor.

Brunner, Daniel; Gerardot, Brian D; Dalgarno, Paul A; Wüst, Gunter; Karrai, Khaled; Stoltz, Nick G; Petroff, Pierre M; Warburton, Richard J · Science · 2009

basic_science · Level V

Where this comes from

Abstract

Semiconductors have uniquely attractive properties for electronics and photonics. However, it has been difficult to find a highly coherent quantum state in a semiconductor for applications in quantum sensing and quantum information processing. We report coherent population trapping, an optical quantum interference effect, on a single hole. The results demonstrate that a hole spin in a quantum dot is highly coherent.