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

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.

v2: Accepted by EPJD, title modified

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Cited by in corpus (7)

• Scalable Designs for Quasiparticle-Poisoning-Protected Topological Quantum Computation with Majorana Zero Modes
• Tunable interfaces for realizing universal quantum computation with topological qubits
• Symmetry Protected Quantum Computation
• Hybrid Exchange Measurement-Based Qubit Operations in Semiconductor Double Quantum Dot Qubits
• Quantum Computation by Spin Parity Measurements with Encoded Spin Qubits
• Quantum simulation of topological Majorana bound states and their universal quantum operations using charge-qubit arrays
• Interferometric detection of Chern numbers in topological optical lattices