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Abstract

As a signal recovery algorithm, compressed sensing is particularly useful when the data has low-complexity and samples are rare, which matches perfectly with the task of quantum phase estimation (QPE). In this work we present a new Heisenberg-limited QPE algorithm for early quantum computers based on compressed sensing. More specifically, given many copies of a proper initial state and queries to some unitary operators, our algorithm is able to recover the frequency with a total runtime \(\mathcal{O}(\epsilon^{-1}\text{poly}\log(\epsilon^{-1}))\), where \(\epsilon\) is the accuracy. Moreover, the maximal runtime satisfies \(T_{\max}\epsilon \ll \pi\), which is comparable to the state of art algorithms, and our algorithm is also robust against certain amount of noise from sampling. We also consider the more general quantum eigenvalue estimation problem (QEEP) and show numerically that the off-grid compressed sensing can be a strong candidate for solving the QEEP.

Details

1009240
Identifier / keyword
Title
Quantum Phase Estimation by Compressed Sensing
Publication title
arXiv.org; Ithaca
Publication year
2024
Publication date
Dec 23, 2024
Section
Computer Science; Mathematics; Quantum Physics
Publisher
Cornell University Library, arXiv.org
Source
arXiv.org
Place of publication
Ithaca
Country of publication
United States
University/institution
Cornell University Library arXiv.org
e-ISSN
2331-8422
Source type
Working Paper
Language of publication
English
Document type
Working Paper
Publication history
 
 
Online publication date
2024-12-24
Milestone dates
2023-06-12 (Submission v1); 2023-07-05 (Submission v2); 2023-12-19 (Submission v3); 2024-09-11 (Submission v4); 2024-12-23 (Submission v5)
Publication history
 
 
   First posting date
24 Dec 2024
ProQuest document ID
2825306829
Document URL
https://www.proquest.com/working-papers/quantum-phase-estimation-compressed-sensing/docview/2825306829/se-2?accountid=208611
Full text outside of ProQuest
Copyright
© 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
Last updated
2024-12-25
Database
ProQuest One Academic