English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

During the long course of evolution, nature has learnt how to exploit quantumeffects. In fact, recent experiments reveal the existence of quantum processeswhose coherence extends over unexpectedly long time and space ranges. Inparticular, photosynthetic processes in light-harvesting complexes display atypical oscillatory dynamics ascribed to quantum coherence. Here, we considerthe simple model where a dimer made of two chromophores is strongly coupledwith a quasi-resonant vibrational mode. We observe the occurrence of wideoscillations of genuine quantum correlations, between electronic excitationsand the environment, represented by vibrational bosonic modes. Such a quantumdynamics has been unveiled through the calculation of the negativity ofentanglement and the discord, indicators widely used in quantum information forquantifying the resources needed to realize quantum technologies. We alsodiscuss the possibility of approximating additional weakly-coupled off-resonantvibrational modes, simulating the disturbances induced by the rest of theenvironment, by a single vibrational mode.  Within this approximation, one can show that the off-resonant bath behaveslike a classical source of noise.

Quantum correlation dynamics in photosynthetic processes assisted by molecular vibrations