An international research team has developed a groundbreaking technique to integrate superconductors with semiconductors by patterning platinum on germanium and heating it to form a superconducting alloy, demonstrating coherent quantum states that could enable hybrid quantum processors combining the scalability of semiconductor qubits with the long-range connectivity of superconducting circuits.
A QuTech research team demonstrated initialization, readout, and universal control of four qubits created from eight germanium quantum dots, achieving quantum information transfer with 75% Bell state fidelity and establishing a versatile platform for quantum computing advancement.
Researchers have demonstrated a S − T_ qubit whose frequency is a strong function of the voltage applied to the barrier gate shared by the quantum dots.
QuTech researchers have demonstrated that a single hole trapped in a germanium quantum dot can function effectively as a qubit, using standard semiconductor manufacturing techniques that could potentially allow for scalable quantum computing systems.