Coherent delocalization: Views of entanglement in different scenarios

Abstract

The concept of entanglement was originally introduced to explain correlations existing between two spatially separated systems, that cannot be described using classical ideas. Interestingly, in recent years, it has been shown that similar correlations can be observed when considering different degrees of freedom of a single system, even a classical one. Surprisingly, it has also been suggested that entanglement might be playing a relevant role in certain biological processes, such as the functioning of pigment-proteins that constitute light-harvesting complexes of photosynthetic bacteria. The aim of this work is to show that the presence of entanglement in all of these different scenarios should not be unexpected, once it is realized that the very same mathematical structure can describe all of them. We show this by considering three different, realistic cases in which the only condition for entanglement to exist is that a single excitation is coherently delocalized between the different subsystems that compose the system of interest.

References in corpus (4)

• Sudden Death of Entanglement
• Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
• Spin-orbit hybrid entanglement of photons and quantum contextuality
• Generation of tunable entanglement and violation of a Bell-like inequality between different degrees of freedom of a single photon

Cited by in corpus (6)

• Reconfigurable Network for Quantum Transport Simulation
• Photochemical dynamics under incoherent illumination: light harvesting in self-assembled molecular J-aggregates
• Quantum interference induced photon localisation and delocalisation in coupled cavities
• Generation of NOON states in waveguide arrays
• Two-particle quantum correlations in stochastically-coupled networks
• Noise-Assisted Discord-Like Correlations in Light-Harvesting Photosynthetic Complexes