Kraus decomposition for chaotic environments

Abstract

We consider a system interacting with a chaotic thermodynamic bath. We derive an explicit and exact Kraus operator sum representation (OSR) for the open system reduced density. The OSR preserves the Hermiticity, complete positivity and norm. We show that it is useful as a numerical tool by testing it against exact results for a qubit interacting with an isolated flawed quantum computer. We also discuss some interesting qualitative aspects of the OSR.

References in corpus (3)

• Non-Markovian generalization of the Lindblad theory of open quantum systems
• Probing internal bath dynamics by a Rabi oscillator-based detector
• Quantum pathology of static internal imperfections in flawed quantum computers

Cited by in corpus (2)

• Manifold algorithmic errors in quantum computers with static internal imperfections
• Kraus decomposition for chaotic environments including time-dependent subsystem Hamiltonians