Multipartite entanglement in the Fenna-Matthews-Olson (FMO) pigment-protein complex

Abstract

We investigate multipartite states in the Fenna-Matthews-Olson (FMO) pigment-protein complex of the green sulfur bacteria using a Lorentzian spectral density of the phonon reservoir fitted with typical parameter estimates of the species, P. aestuarii. The evolution of the entanglement measure of the excitonic W qubit states is evaluated in the picosecond time range, showing increased revivals in the non-Markovian regime. Similar trends are observed in the evolution dynamics of the Meyer-Wallach measure of the N-exciton multipartite state, with results showing that multipartite entanglement can last from 0.5 to 1 ps, between the Bchls of the FMO complex. The teleportation and quantum information splitting fidelities associated with the GHZ and W_A resource states of the excitonic qubit channels of the FMO complex show that revivals in fidelities increase with the degree of non-Markovian strength of the decoherent environment. Results indicate that quantum information processing tasks involving teleportation followed by the decodification process involving W_A states of the FMO complex, may play a critical role during coherent oscillations at physiological temperatures.

16 pages, new figs, typos

References in corpus (12)

• Finite-Time Disentanglement via Spontaneous Emission
• Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
• Dephasing assisted transport: Quantum networks and biomolecules
• Environment-Assisted Quantum Transport
• Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
• Efficiency of energy transfer in a light-harvesting system under quantum coherence
• Scaling laws for the decay of multiqubit entanglement
• Multiparticle entanglement under the influence of decoherence
• Robustness of Highly Entangled Multi-Qubit States Under Decoherence
• Quantum effects in energy and charge transfer in an artificial photosynthetic complex
• Correlated interaction fluctuations in photosynthetic complexes
• Non-hermitian exciton dynamics in a photosynthetic unit system

Cited by in corpus (6)

• Robust multipartite entanglement generation via a collision model
• Non-Markovianity during quantum Zeno effect
• Non-Markovianity and Clauser-Horne-Shimony-Holt (CHSH)-Bell inequality violation in quantum dissipative systems
• Exceptional points and quantum correlations in precise measurements
• Exciton propagation via quantum walks based on non-Hermitian coin flip operations
• Violation of the "information-disturbance relationship" in finite-time quantum measurements