Quenched decoherence in qubit dynamics due to strong amplitude-damping noise

Abstract

We study non-perturbatively the time evolution of a qubit subject to amplitude-damping noise. We show that at strong coupling the qubit decoherence can be quenched owing to large environment feedbacks, such that the qubit can evolve coherently even in the long-time limit. As an application, we show that for a quantum channel that consists of two independent qubits subject to uncorrelated local amplitude-damping noises, it can maintain at strong coupling finite entanglement and better than classical teleportation fidelity at long times.

References in corpus (5)

• Non-Abelian Anyons and Topological Quantum Computation
• Finite-Time Disentanglement via Spontaneous Emission
• Preserving qubit coherence by dynamical decoupling
• Exact non-Markovian cavity dynamics strongly coupled to a reservoir
• Exact dynamics for optical coherent-state qubits subject to environment noise

Cited by in corpus (5)

• Decoherence Patterns of Topological Qubits from Majorana Modes
• Bound state and non-Markovian dynamics of a quantum emitter around a surface plasmonic nanostructure
• Sudden change in dynamics of genuine multipartite entanglement of cavity-reservoir qubits
• Remote sensing and faithful quantum teleportation through non-localized qubits
• Conductivity measurements in JCH like models