Suppression of quantum chaos in a quantum computer hardware

TL;DR

This paper investigates how magnetic field gradients can suppress quantum chaos in a proposed quantum computer hardware, combining numerical and analytical methods to identify stable regimes.

Contribution

It provides new insights into controlling quantum chaos in quantum computing hardware through magnetic field manipulation.

Findings

Strong magnetic field gradients suppress quantum chaos.

Identification of stable and chaotic regimes based on system parameters.

Analytical and numerical validation of chaos suppression mechanisms.

Abstract

We present numerical and analytical studies of a quantum computer proposed by the Yamamoto group in Phys. Rev. Lett. 89, 017901 (2002). The stable and quantum chaos regimes in the quantum computer hardware are identified as a function of magnetic field gradient and dipole-dipole couplings between qubits on a square lattice. It is shown that a strong magnetic field gradient leads to suppression of quantum chaos.