Scaling of Spin Qubits

Session

Qubit connectivity and architecture

29 Aug 2022, 09:10

A1-05.01 (Copenhagen University- Frederiksberg campus)

12. Conveyor-mode single-electron shuttling in Si/SiGe

Lars Schreiber (RWTH Aachen University)

29/08/2022, 09:10

We demonstrate shuttling of a single electron by a propagating wave-potential in an electrostatically defined 420 nm long Si/SiGe quantum-channel [1]. This conveyor-mode shuttling approach requires only four sinusoidal control signals independent from its length. The tuning of the signal parameters is straightforward and we observe a high single-electron shuttling fidelity of 99.42 % including...

15. Tomography of universal two-qubit logic operations in exchange-coupled donor electron spin qubits

Holly Stemp (UNSW)

29/08/2022, 09:50

Scalable quantum processors require high-fidelity universal quantum logic operations, in a manufacturable physical platform, along with the capacity to couple multiple qubits together over a variable range of length scales. The spin of an electron bound to a single donor atom in silicon has shown coherence times of almost a second [1], with single qubit quantum operation fidelities of over...

13. Strong hole spin-photon coupling in silicon

Cécile Yu (CEA-IRIG)

29/08/2022, 10:15

Recently, hole spins in silicon and germanium have shown increasing interest for quantum information processing owing to the advantage of manipulating their state with electric instead of magnetic microwave fields. This is possible due to the strong spin-orbit interaction intrinsically present in the valance band of these materials. Spin-orbit coupling offers as well the possibility to couple...