article published yes Daniel Jirovec author 4C473F58-F248-11E8-B48F-1D18A9856A870000-0002-7197-4801 Philipp M. Mutter author Andrea C Hofmann author 340F461A-F248-11E8-B48F-1D18A9856A87 Alessandro Crippa author 1F2B21A2-F6E7-11E9-9B82-F7DBE56974250000-0002-2968-611X Marek Rychetsky author David L. Craig author Josip Kukucka author 3F5D8856-F248-11E8-B48F-1D18A9856A87 Frederico Martins author 38F80F9A-1CB8-11EA-BC76-B49B3DDC885E0000-0003-2668-2401 Andrea Ballabio author Natalia Ares author Daniel Chrastina author Giovanni Isella author Guido Burkard author Georgios Katsaros author 38DB5788-F248-11E8-B48F-1D18A9856A870000-0001-8342-202X GradSch department GeKa department Majorana bound states in Ge/SiGe heterostructures project ISTplus - Postdoctoral Fellowships project Hole spin orbit qubits in Ge quantum wells project High impedance circuit quantum electrodynamics with hole spins project Long-range spin exchange for 2D qubits architectures project The spin-orbit interaction permits to control the state of a spin qubit via electric fields. For holes it is particularly strong, allowing for fast all electrical qubit manipulation, and yet an in-depth understanding of this interaction in hole systems is missing. Here we investigate, experimentally and theoretically, the effect of the cubic Rashba spin-orbit interaction on the mixing of the spin states by studying singlet-triplet oscillations in a planar Ge hole double quantum dot. Landau-Zener sweeps at different magnetic field directions allow us to disentangle the effects of the spin-orbit induced spin-flip term from those caused by strongly site-dependent and anisotropic quantum dot g tensors. Our work, therefore, provides new insights into the hole spin-orbit interaction, necessary for optimizing future qubit experiments. https://research-explorer.ista.ac.at/download/10920/10928/2022_PhysRevLetters_Jirovec.pdf application/pdfno American Physical Society2022 eng 1079-7114 2111.05130 35394319 00078654250000410.1103/PhysRevLett.128.126803 12812 https://research-explorer.ista.ac.at/record/18291 Jirovec, Daniel, et al. “Dynamics of Hole Singlet-Triplet Qubits with Large g-Factor Differences.” <i>Physical Review Letters</i>, vol. 128, no. 12, 126803, American Physical Society, 2022, doi:<a href="https://doi.org/10.1103/PhysRevLett.128.126803">10.1103/PhysRevLett.128.126803</a>. D. Jirovec <i>et al.</i>, “Dynamics of hole singlet-triplet qubits with large g-factor differences,” <i>Physical Review Letters</i>, vol. 128, no. 12. American Physical Society, 2022. Jirovec D, Mutter PM, Hofmann AC, et al. Dynamics of hole singlet-triplet qubits with large g-factor differences. <i>Physical Review Letters</i>. 2022;128(12). doi:<a href="https://doi.org/10.1103/PhysRevLett.128.126803">10.1103/PhysRevLett.128.126803</a> Jirovec, D., Mutter, P. M., Hofmann, A. C., Crippa, A., Rychetsky, M., Craig, D. L., … Katsaros, G. (2022). Dynamics of hole singlet-triplet qubits with large g-factor differences. <i>Physical Review Letters</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevLett.128.126803">https://doi.org/10.1103/PhysRevLett.128.126803</a> Jirovec, Daniel, Philipp M. Mutter, Andrea C Hofmann, Alessandro Crippa, Marek Rychetsky, David L. Craig, Josip Kukucka, et al. “Dynamics of Hole Singlet-Triplet Qubits with Large g-Factor Differences.” <i>Physical Review Letters</i>. American Physical Society, 2022. <a href="https://doi.org/10.1103/PhysRevLett.128.126803">https://doi.org/10.1103/PhysRevLett.128.126803</a>. D. Jirovec, P.M. Mutter, A.C. Hofmann, A. Crippa, M. Rychetsky, D.L. Craig, J. Kukucka, F. Martins, A. Ballabio, N. Ares, D. Chrastina, G. Isella, G. Burkard, G. Katsaros, Physical Review Letters 128 (2022). Jirovec D, Mutter PM, Hofmann AC, Crippa A, Rychetsky M, Craig DL, Kukucka J, Martins F, Ballabio A, Ares N, Chrastina D, Isella G, Burkard G, Katsaros G. 2022. Dynamics of hole singlet-triplet qubits with large g-factor differences. Physical Review Letters. 128(12), 126803. 109202022-03-24T15:51:11Z2025-04-14T07:44:07Z