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Related Experiment Videos

Avoiding quantum chaos in quantum computation.

G P Berman1, F Borgonovi, F M Izrailev

  • 1Theoretical Division and CNLS, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|January 22, 2002
PubMed
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A nonhomogeneous magnetic field can reduce quantum chaos in nuclear spin chains, enhancing quantum computation stability. This finding challenges the notion that more qubits inevitably increase quantum chaos.

Area of Science:

  • Quantum Information Science
  • Condensed Matter Physics
  • Quantum Computation

Background:

  • Quantum chaos is a significant obstacle to stable quantum computation, typically worsening with more qubits.
  • Nuclear spin chains are potential candidates for experimental quantum computation.

Purpose of the Study:

  • To investigate the impact of a nonhomogeneous magnetic field on quantum chaos in a one-dimensional nuclear spin chain.
  • To determine if nonhomogeneous fields can mitigate quantum chaos and improve quantum computation stability.

Main Methods:

  • Analytical estimations were developed to explain the observed effects.
  • Numerical simulations were conducted to support the analytical findings.

Main Results:

Related Experiment Videos

  • The presence of a nonhomogeneous magnetic field was shown to significantly reduce quantum chaos effects in the spin chain.
  • This reduction contradicts the standard view that quantum chaos increases with the number of qubits.

Conclusions:

  • Nonhomogeneous magnetic fields offer a promising strategy to suppress quantum chaos in quantum computing architectures.
  • This research provides a pathway to more stable and reliable quantum operations using nuclear spin systems.