A germanium hole spin qubit

H. Watzinger, J. Kukucka, L. Vukusic, F. Gao, T. Wang, F. Schäffler, J. Zhang, G. Katsaros, Nature Communications 9 (2018).

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Journal Article | Published | English
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Abstract
Holes confined in quantum dots have gained considerable interest in the past few years due to their potential as spin qubits. Here we demonstrate two-axis control of a spin 3/2 qubit in natural Ge. The qubit is formed in a hut wire double quantum dot device. The Pauli spin blockade principle allowed us to demonstrate electric dipole spin resonance by applying a radio frequency electric field to one of the electrodes defining the double quantum dot. Coherent hole spin oscillations with Rabi frequencies reaching 140 MHz are demonstrated and dephasing times of 130 ns are measured. The reported results emphasize the potential of Ge as a platform for fast and electrically tunable hole spin qubit devices.
Publishing Year
Date Published
2018-09-25
Journal Title
Nature Communications
Volume
9
Issue
3902
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Watzinger H, Kukucka J, Vukusic L, et al. A germanium hole spin qubit. Nature Communications. 2018;9(3902). doi:10.1038/s41467-018-06418-4
Watzinger, H., Kukucka, J., Vukusic, L., Gao, F., Wang, T., Schäffler, F., … Katsaros, G. (2018). A germanium hole spin qubit. Nature Communications, 9(3902). https://doi.org/10.1038/s41467-018-06418-4
Watzinger, Hannes, Josip Kukucka, Lada Vukusic, Fei Gao, Ting Wang, Friedrich Schäffler, Jian Zhang, and Georgios Katsaros. “A Germanium Hole Spin Qubit.” Nature Communications 9, no. 3902 (2018). https://doi.org/10.1038/s41467-018-06418-4.
H. Watzinger et al., “A germanium hole spin qubit,” Nature Communications, vol. 9, no. 3902, 2018.
Watzinger H, Kukucka J, Vukusic L, Gao F, Wang T, Schäffler F, Zhang J, Katsaros G. 2018. A germanium hole spin qubit. Nature Communications. 9(3902).
Watzinger, Hannes, et al. “A Germanium Hole Spin Qubit.” Nature Communications, vol. 9, no. 3902, Nature Publishing Group, 2018, doi:10.1038/s41467-018-06418-4.
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