Ultrafast coherent control and suppressed nuclear feedback of a single quantum dot hole qubit

• DOI: 10.1038/nphys2078
• Publication Date: 2011-08-28T19:14:37Z
• Authors: Kristiaan De Greve; Peter L. McMahon; David Press; Thaddeus D. Ladd; Dirk Bisping; Christian Schneider; Martin Kamp; Lukas Worschech; Sven Höfling; Alfred Forchel; Yoshihisa Yamamoto
• Keywords: Coherent control

Electron spin in quantum dots are extensively studied as a qubit for quantum information processing. However, the coherence of electron spin is deleteriously influenced by nuclear spin. Quantum-dot holes are a potential alternative. Full control over hole-spin qubits is now achieved using picosecond lasers.