TY - JOUR
T1 - The germanium quantum information route
AU - Scappucci, Giordano
AU - Kloeffel, Christoph
AU - Zwanenburg, Floris A.
AU - Loss, Daniel
AU - Myronov, Maksym
AU - Zhang, Jian-Jun
AU - De Franceschi, Silvano
AU - Katsaros , Georgios
AU - Veldhorst, Menno
N1 - Funding Information:
G.S., M.V. and F.A.Z. acknowledge financial support from the Netherlands Organization for Scientific Research (NWO). F.A.Z., D.L. and G.K. acknowledge funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 862046. G.K. acknowledges funding from FP7 ERC Starting Grant 335497, FWF Y 715-N30 and FWF P-30207. S.D.F. acknowledges support from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 81050 and from the Agence Nationale de la Recherche through the TOPONANO and QSPIN projects. J.-J.Z. acknowledges support from the National Key R&D Program of China (grant no. 2016YFA0301701) and Strategic Priority Research Program of the Chinese Academy of Sciences (grant no. XDB30000000). D.L. and C.K. acknowledge the Swiss National Science Foundation and NCCR QSIT.
Publisher Copyright:
© 2020, Springer Nature Limited.
PY - 2021/10
Y1 - 2021/10
N2 - In the effort to develop disruptive quantum technologies, germanium is emerging as a versatile material to realize devices capable of encoding, processing and transmitting quantum information. These devices leverage the special properties of holes in germanium, such as their inherently strong spin–orbit coupling and their ability to host superconducting pairing correlations. In this Review, we start by introducing the physics of holes in low-dimensional germanium structures, providing key insights from a theoretical perspective. We then examine the materials-science progress underpinning germanium-based planar heterostructures and nanowires. We go on to review the most significant experimental results demonstrating key building blocks for quantum technology, such as an electrically driven universal quantum gate set with spin qubits in quantum dots and superconductor–semiconductor devices for hybrid quantum systems. We conclude by identifying the most promising avenues towards scalable quantum information processing in germanium-based systems.
AB - In the effort to develop disruptive quantum technologies, germanium is emerging as a versatile material to realize devices capable of encoding, processing and transmitting quantum information. These devices leverage the special properties of holes in germanium, such as their inherently strong spin–orbit coupling and their ability to host superconducting pairing correlations. In this Review, we start by introducing the physics of holes in low-dimensional germanium structures, providing key insights from a theoretical perspective. We then examine the materials-science progress underpinning germanium-based planar heterostructures and nanowires. We go on to review the most significant experimental results demonstrating key building blocks for quantum technology, such as an electrically driven universal quantum gate set with spin qubits in quantum dots and superconductor–semiconductor devices for hybrid quantum systems. We conclude by identifying the most promising avenues towards scalable quantum information processing in germanium-based systems.
U2 - 10.1038/s41578-020-00262-z
DO - 10.1038/s41578-020-00262-z
M3 - Review article
VL - 6
SP - 926
EP - 943
JO - Nature Reviews. Materials
JF - Nature Reviews. Materials
SN - 2058-8437
IS - 10
ER -