Coherence dynamics in photosynthesis: protein protection of excitonic coherence.

  title={Coherence dynamics in photosynthesis: protein protection of excitonic coherence.},
  author={Hohjai Lee and Y. Cheng and Graham R Fleming},
  volume={316 5830},
The role of quantum coherence in promoting the efficiency of the initial stages of photosynthesis is an open and intriguing question. We performed a two-color photon echo experiment on a bacterial reaction center that enabled direct visualization of the coherence dynamics in the reaction center. The data revealed long-lasting coherence between two electronic states that are formed by mixing of the bacteriopheophytin and accessory bacteriochlorophyll excited states. This coherence can only be… CONTINUE READING

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