Classical noise assists the flow of quantum energy by `momentum rejuvenation'
arXiv:1405.7914 · doi:10.1088/1367-2630/17/1/013057
Abstract
An important challenge in quantum science is to fully understand the efficiency of energy flow in networks. Here we present a simple and intuitive explanation for the intriguing observation that optimally efficient networks are not purely quantum, but are assisted by some interaction with a `noisy' classical environment. By considering the system's dynamics in both the site-basis and the momentum-basis, we show that the effect of classical noise is to sustain a broad momentum distribution, countering the depletion of high mobility terms which occurs as energy exits from the network. This picture predicts that the optimal level of classical noise is reciprocally related to the linear dimension of the lattice; our numerical simulations verify this prediction to high accuracy for regular 1D and 2D networks over a range of sizes up to thousands of sites. This insight leads to the discovery that dramatic further improvements in performance occur when a driving field targets noise at the low mobility components.
References in corpus (37)
- Artificial Brownian motors: Controlling transport on the nanoscale
- Quantum Communication Through an Unmodulated Spin Chain
- Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
- Perfect state transfer in quantum spin networks
- Long-lived quantum coherence in photosynthetic complexes at physiological temperature
- Environment-Assisted Quantum Transport
- Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
- Quantum entanglement in photosynthetic light harvesting complexes
- Vibrations, Quanta and Biology
- Role of quantum coherence in chromophoric energy transport
- Noise-assisted energy transfer in quantum networks and light-harvesting complexes
- Quantum channels and memory effects
- Efficiency of energy transfer in a light-harvesting system under quantum coherence
- Dynamics and manipulation of entanglement in coupled harmonic systems with many degrees of freedom
- Non-classicality of the molecular vibrations assisting exciton energy transfer at room temperature
- Entanglement and entangling power of the dynamics in light-harvesting complexes
- Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization energy, and spatial-temporal correlations
- Limits of quantum speedup in photosynthetic light harvesting
- Exact solution for a diffusive nonequilibrium steady state of an open quantum chain
- Efficient and coherent excitation transfer across disordered molecular networks
- Quantum stochastic walks: A generalization of classical random walks and quantum walks
- Localization and its consequences for quantum walk algorithms and quantum communication
- Number-Theoretic Nature of Communication in Quantum Spin Systems
- Quantum transport efficiency and Fourier's law
- Noise-enhanced classical and quantum capacities in communication networks
- Generic Mechanism of Optimal Energy Transfer Efficiency: A Scaling Theory of the Mean First Passage Time in Exciton Systems
- Environment-assisted quantum transport in ordered systems
- Energy Transport in Trapped Ion Chains
- Bounds on quantum communication via Newtonian gravity
- Delocalization in the Anderson model due to a local measurement
- Optimally designed quantum transport across disordered networks
- Universally Optimal Noisy Quantum Walks on Complex Networks
- Energy-scales convergence for optimal and robust quantum transport in photosynthetic complexes
- Quantum diffusion with disorder, noise and interaction
- Environment-assisted quantum transport and trapping in dimers
- Transport efficiency in topologically disordered networks with environmentally induced diffusion
- Excitation transfer through open quantum networks: a few basic mechanisms
Cited by in corpus (15)
- Enhancing quantum transport in a photonic network using controllable decoherence
- Fast Escape from Quantum Mazes in Integrated Photonics
- Do photosynthetic complexes use quantum coherence to increase their efficiency? Probably not
- Environment-assisted quantum transport and mobility edges
- Environment-Assisted Quantum Transport through Single-Molecule Junctions
- The dark side of energy transport along excitonic wires: On-site energy barriers facilitate efficient, vibrationally-mediated transport through optically dark subspaces
- Superradiance at the localization-delocalization crossover in tubular chlorosomes
- Structure-Dynamics Relation in Physically-Plausible Multi-Chromophore Systems
- Disorder and dephasing as control knobs for light transport in optical fiber cavity networks
- Dynamics of coherence, localization and excitation transfer in disordered nanorings
- Driving-assisted open quantum transport in qubit networks
- Principles underlying efficient exciton transport unveiled by information-geometric analysis
- Localisation determines the optimal noise rate for quantum transport
- Electric-field assisted optimal quantum transport of photo-excitations in polar heterostructures
- How to Suppress Dark States in Quantum Networks and Bio-Engineered Structures