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Arbitrary precision composite pulses for NMR quantum computing.

William G Alway1, Jonathan A Jones

  • 1Oxford Centre for Quantum Computation, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|September 25, 2007
PubMed
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This study implements arbitrary precision composite pulses for enhanced quantum computation accuracy. The novel pulse sequences effectively correct for both pulse length and off-resonance errors in nuclear magnetic resonance (NMR).

Area of Science:

  • Quantum Information Science
  • Atomic, Molecular, and Optical Physics
  • Magnetic Resonance Spectroscopy

Background:

  • Accurate control of quantum systems is crucial for reliable quantum computation.
  • Errors in pulse duration and frequency (off-resonance) are significant challenges in NMR quantum computing.

Purpose of the Study:

  • To implement and demonstrate arbitrary precision composite pulses.
  • To address and correct for pulse length and off-resonance errors in quantum computations.

Main Methods:

  • Utilized methods developed by Brown et al. for arbitrary precision composite pulse design.
  • Developed explicit pulse sequences tailored for specific error types.

Main Results:

  • Demonstrated successful implementation of composite pulses with arbitrary precision.

Related Experiment Videos

  • Provided explicit results for pulse sequences correcting pulse length errors.
  • Showcased effectiveness of sequences in mitigating off-resonance errors.

    • Conclusions:

    • Arbitrary precision composite pulses offer a robust solution for error mitigation in NMR quantum computation.
    • The developed techniques have potential applications beyond NMR, in various quantum control scenarios.