Decoherence-assisted transport and quantum criticalities
arXiv:1208.2131 · doi:10.1103/PhysRevA.86.052112
Abstract
We study the dynamics of a two-level quantum system interacting with an external environment that takes the form of an XY spin chain in the presence of an external magnetic field. While the presence of the bath itself can enhance the transition probability from the lower level to the upper level of the system, we show that this noise-assisted phenomenon is sensitive to a change of the quantum phase of the environment. The derivative of the transition probability displays a maximum in correspondence with the critical value of the applied field both in the case of isotropic and anisotropic chains.
References in corpus (19)
- Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
- Long-lived quantum coherence in photosynthetic complexes at physiological temperature
- Dephasing assisted transport: Quantum networks and biomolecules
- Environment-Assisted Quantum Transport
- Decay of Loschmidt Echo Enhanced by Quantum Criticality
- Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
- Quantum entanglement in photosynthetic light harvesting complexes
- Efficiency of energy transfer in a light-harvesting system under quantum coherence
- Entanglement and entangling power of the dynamics in light-harvesting complexes
- Decoherence induced by interacting quantum spin baths
- Critical dynamics of decoherence
- Environment-assisted quantum transport in ordered systems
- Entanglement Sharing and Decoherence in the Spin-Bath
- Decoherence assisted transport in a dimer system
- Vibration-enhanced quantum transport
- Bang-Bang control of a qubit coupled to a quantum critical spin bath
- Decoherence by engineered quantum baths
- Ion-trap simulation of the quantum phase transition in an exactly solvable model of spins coupled to bosons
- Excitation transfer through open quantum networks: a few basic mechanisms