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Suppression of quantum chaos in a quantum computer hardware
1Laboratoire de Physique Théorique, UMR 5152 du CNRS, Université Paul Sabatier, 31062 Toulouse Cedex 4, France. jose.lages@univ-fcomte.fr
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 10, 2006
Summary
We studied a quantum computer
Area of Science:
- Quantum computing
- Quantum chaos
- Solid-state physics
Background:
- The Yamamoto group proposed a quantum computer design.
- Understanding quantum chaos is crucial for stable quantum computation.
Purpose of the Study:
- To identify stable and quantum chaos regimes in the Yamamoto quantum computer.
- To investigate the influence of magnetic field gradients and qubit couplings on quantum chaos.
Main Methods:
- Numerical simulations of the quantum computer hardware.
- Analytical studies of quantum system dynamics.
- Analysis as a function of magnetic field gradient and dipole-dipole couplings.
Main Results:
- Identified distinct stable and quantum chaos regimes.
- Demonstrated that a strong magnetic field gradient suppresses quantum chaos.
- Showed the role of dipole-dipole couplings in qubit interactions.
Conclusions:
- A strong magnetic field gradient is key to achieving stable quantum computation.
- The findings provide insights into controlling quantum chaos in qubit systems.
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