Radical-ion-pair reactions are the biochemical equivalent of the optical double slit experiment

Details Radical-ion-pair reactions are the biochemical equivalent of the optical double slit experiment Radical-ion-pair reactions are the biochemical equivalent of the optical double slit experiment

2010-09-14

arxiv.org/abs/1009.2807v4

Phys. Rev. E 83, 056118 (2011)

Physics

Quantum Physics

9 pages, 5 figures, published version

Scientific paper

Radical-ion-pair reactions were recently shown to represent a rich biophysical laboratory for the application of quantum measurement theory methods and concepts. We here show that radical-ion-pair reactions essentially form a non-linear biochemical double slit interferometer. Quantum coherence effects are visible when "which-path" information is limited, and the incoherent limit is approached when measurement-induced decoherence sets in. Based on this analogy with the optical double slit experiment we derive and elaborate on the fundamental master equation of spin-selective radical-ion-pair reactions that covers the continuous range from complete incoherence to maximum singlet-triplet coherence.

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