Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Pure State Tomography with Fourier Transformation

Pure State Tomography with Fourier Transformation Extracting information from quantum devices has long been a crucial problem in the field of quantum mechanics. By performing elaborate measurements, quantum state tomography, an important and fundamental tool in quantum science and technology, can be used to determine unknown quantum states completely. In this study, methods to determine multi‐qubit pure quantum states uniquely and directly are explored. Two adaptive protocols are proposed, with their respective quantum circuits. Herein, two or three observables are sufficient, while the number of measurement outcomes are either the same as or fewer than those in existing methods. Additionally, experiments on the IBM 5‐qubit quantum computer, as well as numerical investigations, demonstrate the feasibility of the proposed protocols. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Quantum Technologies Wiley

Pure State Tomography with Fourier Transformation

Advanced Quantum Technologies , Volume 5 (8) – Aug 1, 2022

Loading next page...
 
/lp/wiley/pure-state-tomography-with-fourier-transformation-4qVirveHhu

References (52)

Publisher
Wiley
Copyright
© 2022 Wiley‐VCH GmbH
eISSN
2511-9044
DOI
10.1002/qute.202100091
Publisher site
See Article on Publisher Site

Abstract

Extracting information from quantum devices has long been a crucial problem in the field of quantum mechanics. By performing elaborate measurements, quantum state tomography, an important and fundamental tool in quantum science and technology, can be used to determine unknown quantum states completely. In this study, methods to determine multi‐qubit pure quantum states uniquely and directly are explored. Two adaptive protocols are proposed, with their respective quantum circuits. Herein, two or three observables are sufficient, while the number of measurement outcomes are either the same as or fewer than those in existing methods. Additionally, experiments on the IBM 5‐qubit quantum computer, as well as numerical investigations, demonstrate the feasibility of the proposed protocols.

Journal

Advanced Quantum TechnologiesWiley

Published: Aug 1, 2022

Keywords: Fourier transformation; N ‐qubit pure state; projective measurements; quantum circuits; quantum state tomography

There are no references for this article.