Observations about utilitarian coherence in the avian compass

Abstract

It is hypothesised that the avian compass relies on spin dynamics in a recombining radical pair. Quantum coherence has been suggested as a resource to this process that nature may utilise to achieve increased compass sensitivity. To date, the true functional role of coherence in these natural systems has remained speculative, lacking insights from sufficiently complex models. Here, we investigate realistically large radical pair models with up to 21 nuclear spins, inspired by the putative magnetosensory protein cryptochrome. By varying relative radical orientations, we reveal correlations of several coherence measures with compass fidelity. Whilst electronic coherence is found to be an ineffective predictor of compass sensitivity, a robust correlation of compass sensitivity and a global coherence measure is established. The results demonstrate the importance of realistic models, and appropriate choice of coherence measure, in elucidating the quantum nature of the avian compass.

arXiv comment10 pages, 4 figures

References in corpus (29)

• Quantifying Coherence
• Quantum Coherence as a Resource
• Non-Markovian dynamics in open quantum systems
• Operational Resource Theory of Coherence
• Description of quantum coherence in thermodynamic processes requires constraints beyond free energy
• The Resource Theory of Quantum States Out of Thermal Equilibrium
• Perspective: Numerically "exact" approach to open quantum dynamics: The hierarchical equations of motion (HEOM)
• Sustained Quantum Coherence and Entanglement in the Avian Compass
• Nature does not rely on long-lived electronic quantum coherence for photosynthetic energy transfer
• IBM Q Experience as a versatile experimental testbed for simulating open quantum systems
• Hierarchy of stochastic pure states for open quantum system dynamics
• Quantum control and entanglement in a chemical compass
• Chemical compass model for avian magnetoreception as a quantum coherent device
• Entanglement and Sources of Magnetic Anisotropy in Radical Pair-Based Avian Magnetoreceptors
• Exact open quantum system dynamics using the Hierarchy of Pure States (HOPS)
• The sensitivity of a radical pair compass magnetoreceptor can be significantly amplified by radical scavengers
• Quantum Coherence and Entanglement in the Avian Compass
• Quantum limit for avian magnetoreception: How sensitive can a chemical compass be?
• An improved semiclassical theory of radical pair recombination reactions
• Spin-selective electron transfer reactions of radical pairs: beyond the Haberkorn master equation
• Asymmetric recombination and electron spin relaxation in the semiclassical theory of radical pair reactions
• Decoherence in the chemical compass: The role of decoherence for avian magnetoreception
• Fundamental limitations on photoisomerization from thermodynamic resource theories
• Magnetosensitivity in dipolarly-coupled three-spin systems
• The radical-pair mechanism as a paradigm for the emerging science of quantum biology
• Environment-induced anisotropy and the sensitivity of the radical pair mechanism in the avian compass
• Quantum relative entropy shows singlet-triplet coherence is a resource in the radical-pair mechanism of biological magnetic sensing
• Retrodictive derivation of the radical-ion-pair master equation and Monte-Carlo simulation with single-molecule quantum trajectories
• Basis-independent system-environment coherence is necessary to detect magnetic field direction in an avian-inspired quantum magnetic sensor

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• Quantum features of the transport through ion channels in the soft knock-on model
• Mind the Gap: From Resolving Theoretical Foundations of Chiral(ity)-Induced Spin Selectivity to Pioneering Implementations in Quantum Sensing
• Physiological search for quantum biological effects based on the Wigner-Yanase connection between coherence and uncertainty
• Engineering the uncontrollable: Steering noisy spin-correlated radical-pairs with coherent and incoherent control