Quantum Computing of Quantum Chaos in the Kicked Rotator Model

Details Quantum Computing of Quantum Chaos in the Kicked Rotator Model Quantum Computing of Quantum Chaos in the Kicked Rotator Model

2002-10-22

arxiv.org/abs/quant-ph/0210154v2

Phys. Rev. E 67, 046220 (2003)

Physics

Quantum Physics

research at Quantware MIPS Center http://www.quantware.ups-tlse.fr, revtex 11 pages, 13 figs, 2 figs and discussion added

Scientific paper

10.1103/PhysRevE.67.046220

We investigate a quantum algorithm which simulates efficiently the quantum kicked rotator model, a system which displays rich physical properties, and enables to study problems of quantum chaos, atomic physics and localization of electrons in solids. The effects of errors in gate operations are tested on this algorithm in numerical simulations with up to 20 qubits. In this way various physical quantities are investigated. Some of them, such as second moment of probability distribution and tunneling transitions through invariant curves are shown to be particularly sensitive to errors. However, investigations of the fidelity and Wigner and Husimi distributions show that these physical quantities are robust in presence of imperfections. This implies that the algorithm can simulate the dynamics of quantum chaos in presence of a moderate amount of noise.

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