Why is quantum physics needed to explain photosynthesis ?

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Why is quantum physics needed to explain photosynthesis?

In what aspect does the corresponding classical theories for photosynthesis fail?
 
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Two other things to check out are electron transfer and vibronic coupling. These play a big role in the efficiency of photosynthetic systems.
 

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Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
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