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Quantum analytic descent

Abstract:

Variational algorithms have particular relevance for near-term quantum computers but require nontrivial parameter optimizations. Here we propose analytic descent: Given that the energy landscape must have a certain simple form in the local region around any reference point, it can be efficiently approximated in its entirety by a classical model - we support these observations with rigorous, complexity-theoretic arguments. One can classically analyze this approximate function to directly ju...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevResearch.4.023017

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
ORCID:
0000-0002-4319-6870
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review X Journal website
Volume:
4
Issue:
2
Article number:
023017
Publication date:
2022-04-06
Acceptance date:
2022-02-02
DOI:
EISSN:
2643-1564
Language:
English
Keywords:
Pubs id:
1259780
Local pid:
pubs:1259780
Deposit date:
2022-10-17

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