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Witnessing eigenstates for quantum simulation of Hamiltonian spectra

Abstract:

The efficient calculation of Hamiltonian spectra, a problem often intractable on classical machines, can find application in many fields, from physics to chemistry. We introduce the concept of an “eigenstate witness” and, through it, provide a new quantum approach that combines variational methods and phase estimation to approximate eigenvalues for both ground and excited states. This protocol is experimentally verified on a programmable silicon quantum photonic chip, a mass-manufacturable pl...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1126/sciadv.aap9646

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Role:
Author
ORCID:
0000-0001-9645-0580
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Role:
Author
ORCID:
0000-0003-1313-9266
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Role:
Author
ORCID:
0000-0002-1763-9746
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Role:
Author
ORCID:
0000-0001-5709-0906
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Role:
Author
ORCID:
0000-0001-7642-1061
European Research Council More from this funder
Publisher:
American Association for the Advancement of Science Publisher's website
Journal:
Science Advances Journal website
Volume:
4
Issue:
1
Article number:
eaap9646
Place of publication:
United States
Publication date:
2018-01-26
Acceptance date:
2017-12-27
DOI:
EISSN:
2375-2548
Pmid:
29387796
Language:
English
Keywords:
Pubs id:
827333
Local pid:
pubs:827333
Deposit date:
2020-07-17

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