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Model of biological quantum logic in DNA.

F Matthew Mihelic1

  • 1Department of Family Medicine, University of Tennessee Graduate School of Medicine, 1924 Alcoa Highway, U-67, Knoxville, TN 37920, USA. fmihelic@utmck.edu.

Life (Basel, Switzerland)
|November 6, 2014
PubMed
Summary

DNA acts as a quantum logic processor, utilizing electron spin coherence and nucleotide bases for quantum gate functions. This DNA quantum processing leverages spin filtering and chiral symmetry for information processing.

Area of Science:

  • Quantum Biology
  • Molecular Electronics
  • Biophysics

Background:

  • DNA exhibits properties suggesting potential as a quantum information processor.
  • Coherent electron transport along DNA has been experimentally verified.
  • DNA's helical structure influences electron spin, acting as a spin filter.

Purpose of the Study:

  • To explore DNA's capacity as a quantum logic processor.
  • To elucidate the mechanisms of electron spin coherence and filtering in DNA.
  • To investigate the role of nucleotide structure in quantum gate functionality.

Main Methods:

  • Analysis of pi-stacking interactions in nucleotide bases for electron conduction.
  • Investigation of DNA helicity's effect on electron spin filtering.

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  • Examination of chiral symmetry in deoxyribose moieties for quantum gate operation.

    • Main Results:

    • Demonstrated coherent electron conduction along DNA via nucleotide pi-stacking.
    • Confirmed efficient electron spin filtering due to DNA's helicity.
    • Identified nucleotide enantiomers (C2-endo and C3-endo) as functional quantum gates.
    • Linked symmetry breaking to electron spin and orbital angular momentum overcoming an energy barrier.

    Conclusions:

    • DNA functions as a quantum logic processor through coherent electron spin transport and filtering.
    • The chiral symmetry of deoxyribose moieties enables quantum gate operations within DNA.
    • Quantum decision-making in DNA is governed by electron spin overcoming an energy barrier related to the Landauer limit.