[Th-P2-G] Qunatum dots & related technologies

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)

[Th-P2-G-01] All-Electrical Spectroscopy of Triplet Spin States in Self-Assembled InAs Quantum Dots

〇Carl Nelson Creutzburg¹, Arne Ludwig², Martin Geller¹, Axel Lorke¹ (1. Univ. Duisburg-Essen (Germany), 2. Ruhr Univ. Bochum (Germany))

We investigate spin relaxation from the excited two-electron triplet state to the singlet ground state in self-assembled quantum dots using transconductance spectroscopy. Improved time resolution (~100 ns) reveals relaxation times up to 155 µs, consistent with the large singlet–triplet energy separation.