17. Dez 2019
Ultrafast and electrically tunable coherent operations of hole spin qubits
Datum: 17. Dezember 2019 |
Sprecher: Floris Braakman, University of Basel
Veranstaltungsort: Heinzel Seminar Room / Office Bldg West (I21.EG.101)
In recent experiments, we have demonstrated the presence of this strong spin-orbit interaction and have used it to show record spin qubit Rabi frequencies exceeding 400 MHz and entering the regime of strong driving. Furthermore, we find the Rabi oscillation frequency as well as the g-factor to be highly tunable through small changes in gate voltages, indicating electrical control over the spin-orbit interaction strength. These measurements demonstrate the viability of hole spin qubits in one-dimensional Ge- and Si-based nanodevices as a platform for the implementation of fast and scalable quantum computation.