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arXiv · 1201.5734

Measurement based Controlled Not gate for topological qubits in a Majorana fermion quantum-dot hybrid system

Zheng-Yuan Xue
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Abstract

We propose a scheme to implement Controlled Not-gate for topological qubits in a quantum-dot-Majorana-fermion hybrid system. Quantum information is encoded on pairs of Majorana fermions, which live on the the interface between topologically trivial and nontrivial sections of a quantum nanowire deposited on an s-wave superconductor. A measurement-based two-qubit Controlled-Not gate is produced with the help of parity measurements assisted by the quantum-dot and followed by prescribed single-qubit gates. The parity measurement, on the quantum-dot and a topological qubit, is achieved by the Aharonov-Casher effect.

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Zheng-Yuan Xue. 2013-03-03. Measurement based Controlled Not gate for topological qubits in a Majorana fermion quantum-dot hybrid system. https://doi.org/10.1140/epjd%2Fe2013-30582-y

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