Title:
FAULT-TOLERANT QUANTUM COMPUTATION
Document Type and Number:
WIPO Patent Application WO/2023/287503
Kind Code:
A3
Abstract:
Error detection in a quantum computer is provided. The quantum computer includes a plurality of qubits encoding a plurality of data qudits and an ancilla qudit. The qubits encoding the plurality of data qudits are arranged into a grouping wherein the qubits encoding each of the plurality of data qudits are within an interaction distance of an interacting state of the qubits encoding the ancilla qudit. A leakage error of a first data qudit of the plurality of data qudits into the interacting state is detected by detecting a state of the ancilla qudit. Error correction in the quantum computer is also provided. Quantum states of the plurality of qudits are selected such that angular momentum selection rules prohibit mixing between the selected quantum states during a leakage error of one of the plurality of qudits into a noninteracting state. The leakage error is corrected by optical pumping of the noninteracting state, the optical pumping preserving coherence of the selected quantum states in the absence of the leakage error.
Inventors:
WANG SHENGTAO (US)
CONG IRIS (US)
LEVINE HARRY (US)
KEESLING CONTRERAS ALEXANDER (US)
LUKIN MIKHAIL (US)
CONG IRIS (US)
LEVINE HARRY (US)
KEESLING CONTRERAS ALEXANDER (US)
LUKIN MIKHAIL (US)
Application Number:
PCT/US2022/031297
Publication Date:
April 06, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
HARVARD COLLEGE (US)
WANG SHENGTAO (US)
WANG SHENGTAO (US)
International Classes:
G06N10/70
Domestic Patent References:
| WO2021007560A1 | 2021-01-14 |
Foreign References:
| US20080185576A1 | 2008-08-07 |
Other References:
JAMES M AUGER ET AL: "A blueprint for fault-tolerant quantum computation with Rydberg atoms", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 20 July 2017 (2017-07-20), XP081282226, DOI: 10.1103/PHYSREVA.96.052320
DANIEL BARREDO ET AL: "An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 11 July 2016 (2016-07-11), XP080713441
PEI JIANG LOW ET AL: "Practical trapped-ion protocols for universal qudit-based quantum computing", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 11 May 2020 (2020-05-11), XP081663930
THEODORE J YODER ET AL: "Universal fault-tolerant gates on nondegenerate stabilizer codes", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 12 March 2016 (2016-03-12), XP080689269
RUI CHAO ET AL: "Fault-tolerant quantum computation with few qubits", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 15 May 2017 (2017-05-15), XP081399504, DOI: 10.1038/S41534-018-0085-Z
IRIS CONG ET AL: "Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 3 May 2022 (2022-05-03), XP091213926
DANIEL BARREDO ET AL: "An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 11 July 2016 (2016-07-11), XP080713441
PEI JIANG LOW ET AL: "Practical trapped-ion protocols for universal qudit-based quantum computing", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 11 May 2020 (2020-05-11), XP081663930
THEODORE J YODER ET AL: "Universal fault-tolerant gates on nondegenerate stabilizer codes", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 12 March 2016 (2016-03-12), XP080689269
RUI CHAO ET AL: "Fault-tolerant quantum computation with few qubits", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 15 May 2017 (2017-05-15), XP081399504, DOI: 10.1038/S41534-018-0085-Z
IRIS CONG ET AL: "Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 3 May 2022 (2022-05-03), XP091213926
Attorney, Agent or Firm:
AKHIEZER, Alexander et al. (US)
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