Anomalous decoherence in a dissipative two-level system

Abstract

We study systematically the non-Markovian decoherence dynamics of a dissipative two-level system, i.e., the so-called spin-boson model. It is interesting to find that the decoherence tends to be inhibited with the increase of the coupling strength between the system and the reservoir, which is contrary to the common recognition that a stronger coupling always induces a severer decoherence. This is attributed to the occurrence of a quantum phase transition (QPT). The relationship between this QPT and conventional delocalized-localized QPT is also discussed. Our result suggests a useful control method to overcome the detrimental effects of the reservoir to the system.

8 pages, 6 figures. Final version

References in corpus (8)

• An Open-System Quantum Simulator with Trapped Ions
• Numerical Renormalization Group for Bosonic Systems and Application to the Subohmic Spin-Boson Model
• Cavity-assisted quantum bath engineering
• Equilibrium and non-equilibrium dynamics of the sub-ohmic spin-boson model
• Mesoscopic Spin-Boson Models of Trapped Ions
• Temperature square dependence of the low frequency 1/f charge noise in the Josephson junction qubits
• Low-frequency Noise in Josephson Junctions for Superconducting Qubits
• Failure of the displaced-squeezed state for spin-boson models in the thermodynamic limit

Cited by in corpus (21)

• Mechanism for quantum speedup in open quantum systems
• Canonical versus noncanonical equilibration dynamics of open quantum systems
• Decoherence Patterns of Topological Qubits from Majorana Modes
• Exact decoherence-free state of two distant quantum systems in a non-Markovian environment
• Bound state and non-Markovian dynamics of a quantum emitter around a surface plasmonic nanostructure
• Quantum Control in Open and Periodically Driven Systems
• Quantum simulation of decoherence in optical waveguide lattices
• Non-Markovian dynamics with a driven three-level giant atom in a semi-infinite photonic waveguide
• Quantum speedup, non-Markovianity and formation of bound state
• Quenched decoherence in qubit dynamics due to strong amplitude-damping noise
• Remote sensing and faithful quantum teleportation through non-localized qubits
• Universal Dissipationless Dynamics in Gaussian Continuous-variable Open Systems
• Quantum speed limit from a quantum-state-diffusion method
• Exact dynamics and thermalization of an open bosonic quantum system in presence of a quantum phase transition induced by the environment
• Equilibrium Dynamics of the Sub-Ohmic Spin-boson Model Under Bias
• Dressed bound states and non-Markovian dynamics with a whispering-gallery-mode microcavity coupled to a two-level atom and a semi-infinite photonic waveguide
• Anomalous decoherence effects in driven coupled quantum spin systems
• Single Mode Approximation for sub-Ohmic Spin-Boson Model: Adiabatic Limit and Critical Properties
• Weak-coupling bound states in semi-infinite topological waveguide QED
• Noise-Resilient Quantum Reinforcement Learning
• Investigation of Dephasing In an Open Quantum System under Chaotic Influence via a Fractional Kohn-Sham Scheme