## SciPost Submission Page

# Visibility of noisy quantum dot-based measurements of Majorana qubits

### by Aleksei Khindanov, Dmitry Pikulin, Torsten Karzig

### Submission summary

As Contributors: | Aleksei Khindanov |

Arxiv Link: | https://arxiv.org/abs/2007.11024v2 (pdf) |

Date submitted: | 2020-08-22 06:12 |

Submitted by: | Khindanov, Aleksei |

Submitted to: | SciPost Physics |

Discipline: | Physics |

Subject area: | Condensed Matter Physics - Theory |

Approach: | Theoretical |

### Abstract

Measurement schemes of Majorana zero modes (MZMs) based on quantum dots (QDs) are of current interest as they provide a scalable platform for topological quantum computation. In a coupled qubit-QD setup we calculate the dependence of the charge of the QD and its differential capacitance on experimentally tunable parameters for both 2-MZM and 4-MZM measurements. We quantify the effect of noise on the measurement visibility by considering $1/f$ noise in detuning, tunneling amplitudes or phase. We find that on- or close-to-resonance measurements are generally preferable and predict, using conservative noise estimates, that noise coupling to the QDs is not a limitation to high-fidelity measurements of topological qubits.

###### Current status:

Editor-in-charge assigned