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This analytical breakthrough resolves design inaccuracies in sub-millimetre Penning traps, enabling precise voltage and geometry optimization for single-electron qubits. By minimizing potential anharmonicity, the method ensures stable confinement essential for scalable quantum information processing. This advancement directly addresses a critical bottleneck in miniaturizing quantum hardware without sacrificing performance.
Researchers Optimise Penning Traps for Single-Electron Qubits
Millimetre-scale Penning traps previously relied upon approximations becoming inaccurate as device dimensions shrink. Now, an analytical solution offers precise design choices for optimising planar Penning trap geometry and voltage settings at sub-millimetre scales. This advancement minimises unwanted distortions in confining potentials, essential for stable single-electron qubits used in quantum information processing.
Detailed analysis of planar Penning traps now extends beyond approximations previously suitable for millimetre-scale devices. A fully analytic treatment is presented applicable to smaller traps, on the millimetre scale and below, where gaps between electrodes become significant, down to 10μm or less. Kedar Mal of Indian Institute of Technology Delhi and colleagues from Inter-University Accelerator Centre and GSI Helmholtzzentrum für Schwerionenforschung demonstrate optimisation of both trap geometry and electrode voltages to minimise unwanted variations in harmonicity; key for…
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