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Efficient Hamiltonian programming in qubit arrays with nearest-neighbor couplings

Abstract:

We consider the problem of selectively controlling couplings in a practical quantum processor with always-on interactions that are diagonal in the computational basis, using sequences of local not gates. This methodology is well known in nuclear magnetic resonance implementations, but previous approaches do not scale efficiently for the general fully connected Hamiltonian, where the complexity of finding time-optimal solutions makes them only practical up to a few tens of qubits. Given the ra...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physreva.102.032405

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
ORCID:
0000-0002-8300-9822
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
ORCID:
0000-0003-1862-587X
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
ORCID:
0000-0002-1410-5642
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review A Journal website
Volume:
102
Issue:
3
Article number:
32405
Publication date:
2020-09-10
Acceptance date:
2020-08-11
DOI:
EISSN:
2469-9934
ISSN:
2469-9926
Language:
English
Keywords:
Pubs id:
1096627
Local pid:
pubs:1096627
Deposit date:
2020-09-11

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