Assessing the potential of Ge/SiGe quantum dots as hosts for singlet-triplet qubits

Autor: Hofmann, Andrea, Jirovec, Daniel, Borovkov, Maxim, Prieto, Ivan, Ballabio, Andrea, Frigerio, Jacopo, Chrastina, Daniel, Isella, Giovanni, Katsaros, Georgios
Rok vydání: 2019
Předmět:
Druh dokumentu: Working Paper
Popis: We study double quantum dots in a Ge/SiGe heterostructure and test their maturity towards singlet-triplet ($S-T_0$) qubits. We demonstrate a large range of tunability, from two single quantum dots to a double quantum dot. We measure Pauli spin blockade and study the anisotropy of the $g$-factor. We use an adjacent quantum dot for sensing charge transitions in the double quantum dot at interest. In conclusion, Ge/SiGe possesses all ingredients necessary for building a singlet-triplet qubit.
Databáze: arXiv