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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Published on: August 17, 2017

A 98-qubit trapped-ion quantum computer with all-to-all connectivity.

Anthony Ransford1, M S Allman2, Jake Arkinstall3

  • 1Quantinuum, Broomfield, CO, USA. anthony.ransford@quantinuum.com.

Nature
|June 17, 2026
PubMed
Summary
This summary is machine-generated.

Quantinuum

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Area of Science:

  • Quantum Computing
  • Quantum Information Science
  • Atomic Physics

Background:

  • Trapped-ion quantum processors offer high gate fidelities but face scaling challenges.
  • Achieving large qubit numbers while maintaining performance is crucial for quantum advantage.
  • The quantum charge-coupled device (QCCD) architecture is a promising approach for scalable quantum computing.

Purpose of the Study:

  • To report on the development and performance of Quantinuum Helios, a 98-qubit trapped-ion quantum processor.
  • To demonstrate a scalable trapped-ion system with high-fidelity operations and all-to-all connectivity.
  • To establish a new frontier in quantum computing fidelity and complexity.

Main Methods:

  • Utilized a 98-qubit trapped-ion quantum processor based on the QCCD architecture.
  • Employed 137Ba+ hyperfine qubits and a rotatable ion storage ring for all-to-all connectivity.
  • Implemented parallelized operations and a real-time compilation software stack.

Main Results:

  • Achieved average infidelities of 2.5(1)×10^-5 for single-qubit gates and 7.9(2)×10^-4 for two-qubit gates.
  • Demonstrated state preparation and measurement (SPAM) infidelity of 3.3(5)×10^-4.
  • Showcased system-level performance in random Clifford circuits and random circuit sampling (RCS), surpassing classical simulation capabilities.

Conclusions:

  • Quantinuum Helios represents a significant advancement in trapped-ion quantum computing, achieving high fidelity across numerous qubits.
  • The processor's performance in RCS indicates it operates beyond classical simulation limits, setting a new benchmark for quantum computing.
  • The demonstrated scalability and fidelity pave the way for future fault-tolerant quantum computers.