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The connectivity within single carrier information-processing devicesrequires transport and storage of single charge quanta. Our all-electricalSi/SiGe shuttle device, called quantum bus (QuBus), spans a length of 10$\mathrm{\mu}$m and is operated by only six simply-tunable voltage pulses. Itoperates in conveyor-mode, i.e. the electron is adiabatically transported whileconfined to a moving QD. We introduce a characterization method, calledshuttle-tomography, to benchmark the potential imperfections and localshuttle-fidelity of the QuBus. The fidelity of the single-electron shuttleacross the full device and back (a total distance of 19 $\mathrm{\mu}$m) is$(99.7 \pm 0.3)\,\%$. Using the QuBus, we position and detect up to 34electrons and initialize a register of 34 quantum dots with arbitrarily chosenpatterns of zero and single-electrons. The simple operation signals,compatibility with industry fabrication and low spin-environment-interaction in$^{28}$Si/SiGe, promises spin-conserving transport of spin qubits for quantumconnectivity in quantum computing architectures.

Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function