High-fidelity teleportation of a logical qubit using transversal gates and lattice surgery
Quantum state teleportation is commonly used in designs for large-scale quantum computers. Using Quantinuum's H2 trapped-ion quantum processor, we demonstrate fault-tolerant state teleportation circuits for a quantum error correction code-specifically the Steane code. The circuits use up to 30 qubits at the physical level and employ real-time quantum error correction. We conducted experiments on several variations of logical teleportation circuits using both transversal gates and lattice surgery. We measured the logical process fidelity to be 0.975 ± 0.002 for the transversal teleportation implementation and 0.851 ± 0.009 for the lattice surgery teleportation implementation as well as 0.989 ± 0.002 for an implementation of Knill-style quantum error correction.
Authors
- Natalie C. Brown (ORCID: https://orcid.org/0000-0002-7163-7223)
- Y. Matsuoka
- B. Neyenhuis
- Juan Miguel Rey Pino (ORCID: https://orcid.org/0000-0001-8889-2274)
- Tanner Mengle
- Jacob Johansen (ORCID: https://orcid.org/0000-0001-8475-0447)
- Dominic Lucchetti
- Joan Dreiling (ORCID: https://orcid.org/0000-0001-9226-203X)
- Thomas M. Gatterman (ORCID: https://orcid.org/0009-0004-6338-4221)
- Peter Siegfried (ORCID: https://orcid.org/0000-0002-0145-2899)
- Mitchell Matheny (ORCID: https://orcid.org/0000-0002-9865-3338)
- Russell Stutz (ORCID: https://orcid.org/0000-0002-3124-2999)
- C. A. Holliman (ORCID: https://orcid.org/0000-0001-6246-1273)
- David Hayes (ORCID: https://orcid.org/0000-0001-8546-9075)
- Ciarán Ryan-Anderson (ORCID: https://orcid.org/0009-0000-2678-2926)
- Nathan Hewitt (ORCID: https://orcid.org/0000-0002-1021-0795)
- John Gaebler (ORCID: https://orcid.org/0000-0002-2616-7410)
- J. Walker (ORCID: https://orcid.org/0009-0009-8481-1057)
- Michael Mills (ORCID: https://orcid.org/0000-0003-2560-4129)
- Karl Mayer (ORCID: https://orcid.org/0000-0001-5509-2756)
- Chandler V. Horst (ORCID: https://orcid.org/0009-0007-5208-7338)
- Charles H. Baldwin (ORCID: https://orcid.org/0000-0003-3938-7428)
- C. B. Foltz (ORCID: https://orcid.org/0000-0001-8933-2172)
- Steven A. Moses (ORCID: https://orcid.org/0009-0000-3162-4615)
Publication Details
- Journal
- Science
- Published
- 2024-09-19
- DOI
- https://doi.org/10.1126/science.adp6016
- Citations
- 35
- Primary Topic
- Quantum Computing Algorithms and Architecture
- Type
- article
- Field-Weighted Citation Impact
- 12.16