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Benchmarking an 11-qubit quantum computer.

K Wright1, K M Beck2, S Debnath2

  • 1IonQ, Inc., College Park, MD, 20740, USA. wright@ionq.co.

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|December 1, 2019
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Summary
This summary is machine-generated.

Researchers developed an 11-qubit trapped ion quantum computer, achieving high fidelities for quantum gates and outperforming existing hardware on benchmark algorithms.

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Area of Science:

  • Quantum Computing
  • Quantum Information Science
  • Atomic Physics

Background:

  • Quantum computing has advanced from theoretical concepts to functional devices over two decades.
  • Universal quantum computers promise significant efficiency gains for complex scientific and commercial problems.

Purpose of the Study:

  • To present a fully-connected, programmable 11-qubit quantum computer utilizing trapped 171Yb+ ions.
  • To benchmark the system's performance against existing quantum hardware.

Main Methods:

  • Construction of an 11-qubit trapped ion quantum computer with full connectivity.
  • Demonstration of high-fidelity single-qubit (99.5%) and two-qubit (97.5%) gate operations.
  • Measurement of State Preparation and Measurement (SPAM) errors at 0.7%.

Main Results:

  • Achieved average single-qubit gate fidelities of 99.5% and two-qubit gate fidelities of 97.5%.
  • Demonstrated low SPAM errors of 0.7%.
  • Successfully executed Bernstein-Vazirani (78% success) and Hidden Shift (35% success) algorithms, outperforming other hardware.

Conclusions:

  • The developed trapped ion quantum computer represents a high-performance universal quantum computing platform.
  • The system's performance on benchmark algorithms indicates its superiority over current quantum hardware.
  • This work provides a strong foundation for future advancements in quantum computation and simulation.