Evaluating Energy Differences on a Quantum Computer with Robust Phase Estimation Article Swipe
Antonio Russo
,
Kenneth Rudinger
,
Benjamin Morrison
,
Andrew Baczewski
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.1103/physrevlett.126.210501
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.1103/physrevlett.126.210501
We adapt the robust phase estimation algorithm to the evaluation of energy differences between two eigenstates using a quantum computer. This approach does not require controlled unitaries between auxiliary and system registers or even a single auxiliary qubit. As a proof of concept, we calculate the energies of the ground state and low-lying electronic excitations of a hydrogen molecule in a minimal basis on a cloud quantum computer. The denominative robustness of our approach is then quantified in terms of a high tolerance to coherent errors in the state preparation and measurement. Conceptually, we note that all quantum phase estimation algorithms ultimately evaluate eigenvalue differences.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1103/physrevlett.126.210501
- OA Status
- green
- Cited By
- 52
- References
- 62
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3042700421
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3042700421Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1103/physrevlett.126.210501Digital Object Identifier
- Title
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Evaluating Energy Differences on a Quantum Computer with Robust Phase EstimationWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2021Year of publication
- Publication date
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2021-05-24Full publication date if available
- Authors
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Antonio Russo, Kenneth Rudinger, Benjamin Morrison, Andrew BaczewskiList of authors in order
- Landing page
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https://doi.org/10.1103/physrevlett.126.210501Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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greenOpen access status per OpenAlex
- OA URL
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https://arxiv.org/pdf/2007.08697Direct OA link when available
- Concepts
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Eigenvalues and eigenvectors, Qubit, Robustness (evolution), Computer science, Quantum, Quantum computer, Algorithm, Phase (matter), Statistical physics, Quantum mechanics, Physics, Chemistry, Gene, BiochemistryTop concepts (fields/topics) attached by OpenAlex
- Cited by
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52Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 11, 2024: 14, 2023: 13, 2022: 6, 2021: 7Per-year citation counts (last 5 years)
- References (count)
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62Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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