Nature research paper: Universal logic with encoded spin qubits in silicon
We are providing an unedited version of this manuscript to give early access to its findings. Before final publication, the manuscript will undergo further editing. Please note there may be errors present which affect the content, and all legal disclaimers apply.Quantum computation features known examples of hardware acceleration for certain problems but is challenging to realize due to its susceptibility to small errors from noise or imperfect control.
Here we demonstrate an alternative approach to QC that utilizes energy-degenerate encoded qubit states controlled by nearest-neighbor contact interactions that partially swap the spin states of electrons with those of their neighbors. Calibrated sequences of such partials, implemented using only voltage pulses, allow universal quantum control while bypassing microwave-associated correlated error sources [1, 22–28].
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