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Benchmarking quantum control methods on a 12-qubit system.

C Negrevergne1, T S Mahesh, C A Ryan

  • 1Institute for Quantum Computing, University of Waterloo, Canada.

Physical Review Letters
|May 23, 2006
PubMed
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We benchmarked quantum control methods for up to 12 qubits, achieving a 12-qubit state. This demonstrates advanced control in nuclear magnetic resonance quantum information processors.

Area of Science:

  • Quantum Information Science
  • Quantum Computing
  • Experimental Physics

Background:

  • Quantum information processors require precise operational control methods.
  • Scaling quantum systems to larger numbers of qubits presents significant challenges.
  • Previous control methods have been limited in their application to larger qubit systems.

Purpose of the Study:

  • To experimentally benchmark operational control methods for quantum information processors.
  • To extend these methods to a 12-qubit system.
  • To assess the accuracy and scalability of implemented control approaches.

Main Methods:

  • Implementation of universal control in a 12-qubit Hilbert space.
  • Utilizing two complementary control approaches.

Related Experiment Videos

  • Employing liquid state nuclear magnetic resonance (NMR) quantum information processors.

    • Main Results:

    • Successful experimental benchmark of operational control methods up to 12 qubits.
    • Achievement of a 12-coherence state (12-qubit pseudopure cat state).
    • Decoding into an 11-qubit plus one qutrit pseudopure state, despite decoherence.

    Conclusions:

    • The presented methods demonstrate effective universal control in large Hilbert spaces.
    • The study highlights the potential and limitations of NMR quantum information processors for scalable quantum control.
    • The successful manipulation of a 12-qubit state validates the experimental benchmark.