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Updated: May 31, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Published on: June 8, 2018

Quantum coherence stabilization in biology via feedback with coherent background fields.

Meisam Ahmadi1, Seyyed Peyman Shariatpanahi2, Javad Shamsi3

  • 1The School of Computer Engineering, Iran University of Science and Technology, Tehran, Iran.

Electromagnetic Biology and Medicine
|May 29, 2026
PubMed
Summary

Living systems maintain quantum coherence via entropy-dependent feedback, where coherence suppresses decoherence, enabling survival in noisy biological environments. This mechanism stabilizes fragile quantum states through a self-reinforcing loop.

Keywords:
ELF magnetic fieldscoherence resonancequantum biologyquantum coherent fieldultralight dark matter (ULDM)

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Area of Science:

  • Quantum Biology
  • Thermodynamics
  • Biophysics

Background:

  • Living systems operate far from thermodynamic equilibrium, maintaining order despite environmental noise.
  • The persistence of quantum coherence in warm, noisy biological environments is a long-standing question.
  • Biological processes show quantum coherence, but stabilizing mechanisms are debated.

Purpose of the Study:

  • To present a model demonstrating how quantum coherence in open spin systems can be stabilized.
  • To investigate the role of entropy-dependent feedback and coherent fields in maintaining coherence.
  • To provide a unifying framework for understanding coherence in biological systems.

Main Methods:

  • Developed a phenomenological model for open quantum spin ensembles.
  • Incorporated entropy-sensitive decoherence suppression and coherence induction.
  • Used multipartite Greenberger-Horne-Zeilinger (GHZ) states for simulations.
  • Performed numerical simulations to analyze system behavior.

Main Results:

  • Demonstrated nonlinear threshold behavior and entropy collapse.
  • Observed long-lived quantum coherence despite strong environmental noise.
  • Identified a positive feedback loop where coherence stabilizes itself by suppressing decoherence.
  • Showcased model compatibility with various coherent field candidates (e.g., ULDM).

Conclusions:

  • Quantum coherence in living matter can be stabilized by structured coupling to coherent fields.
  • Entropy-sensitive feedback dynamically regulates decoherence, rather than isolation.
  • The model offers a general principle for feedback-stabilized coherence in open, noisy systems.
  • This framework advances understanding of quantum phenomena in biological physics.