Strained germanium ($\varepsilon$-Ge) quantum wells on metamorphic SiGe buffers have enabled advanced hole-based spin qubit devices. Alternatively, unstrained Ge with lattice-matched strained silicon-germanium ($\varepsilon$-SiGe) barriers eliminates the need for metamorphic buffers altogether. The ground state charact...
Edmondo Valvo, Davide Costa, Patrick Del Vecchio et al.· 1 citation· ⚡1
Spin qubits are an attractive platform for scalable quantum information processing, and recently, laterally gated quantum dots (QDs) in Ge heterostructures have emerged as a leading implementation of spin qubits. To date, RF single-hole transistors (SHT) and integrated superconducting resonators have been used for spin...
M. Tanvir, E. Sajadi, M. Veldhorst et al.· 0 citations
Fault-tolerant quantum computation requires increasing the qubit count while maintaining high performance and connectivity. Semiconductor qubits have demonstrated high-fidelity operation, but growing the system size at sufficient connectivity remains challenging, such that scaling mainly occurred in one spatial directi...
A. С. Ivlev, H. L. Co, Damien R. Crielaard et al.· 0 citations
Fast measurement, signal processing, and accurate estimation of Hamiltonian parameters are essential for feedback control in quantum-classical interface circuitry. However, existing frequentist and Bayesian inference methods typically require a large number of measurements to achieve the accuracy needed to mitigate qub...
Hyeongyu Jang, Jaemin Park, Younguk Song et al.· 0 citations
Vacuum Rabi oscillations between a single photon and a single spin demonstrate the capability of harnessing light-matter interaction at the level of a single quantum of energy. Since the observation of strong spin-photon coupling in gate-defined quantum dots, probing this interaction in the time-domain has been a major...
X. Xue, J. Dijkema, T. Bonsen et al.· 1 citation
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