7–11 Jul 2025
University of the Witwatersrand, Johannesburg
Africa/Johannesburg timezone
Registration open until 20 May 2025

Quantum state reconstruction on a quantum computer

Not scheduled
1h
Solomon Mahlangu House (University of the Witwatersrand, Johannesburg)

Solomon Mahlangu House

University of the Witwatersrand, Johannesburg

Oral Presentation Track F - Applied Physics Applied Physics

Speaker

mwezi koni (university of the witwatersrand)

Description

Quantum state tomography is an essential technique for characterizing quantum systems. It involves performing projective measurements and computationally reconstructing the density matrix from the measurement data by solving a system of linear equations. The discovery of the HHL algorithm has sparked significant interest in leveraging quantum computers to solve these equations, promising a quantum advantage. However, current quantum computers are limited by noise and constrained qubit counts—which restricts effective error correction—rendering the HHL algorithm impractical in the near term. In this work, we propose a hybrid classical-quantum approach using variational quantum eigensolvers (VQEs) for efficient state reconstruction.

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Primary author

mwezi koni (university of the witwatersrand)

Co-authors

Mr Shawal kassim (University of The Witwstersrand) Paola Concha Obando (University of the Witwatersrand) Andrew Forbes (University of the Witwatersrand) Isaac Nape (University of the Witwatersrand)

Presentation materials

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