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Delocalization and Quantum Entanglement in Physical Systems.

Rajesh Dutta1, Biman Bagchi1

  • 1SSCU , Indian Institute of Science , Bangalore 560012 , India.

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Lowering temperature in quantum systems enhances long-lasting quantum coherence and delocalization. This quantum coherence and entanglement dictate the dynamics of localization in systems like photosynthetic complexes.

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Area of Science:

  • Quantum mechanics
  • Biophysics
  • Materials science

Background:

  • Quantum coherence and entanglement are crucial in natural systems like photosynthesis.
  • Understanding these phenomena in extended, interacting systems is key.

Purpose of the Study:

  • To investigate the temperature dependence of quantum coherence in a trimer complex.
  • To analyze the relationship between coherence, entanglement, and dynamic localization.

Main Methods:

  • Utilized a temperature-dependent quantum stochastic Liouville equation.
  • Studied the non-Markovian limit to observe long-term effects.

Main Results:

  • Decreasing temperature leads to persistent quantum coherence.
  • Increased quantum coherence results in growing delocalization.
  • Entanglement and coherence length influence dynamic localization.

Conclusions:

  • Temperature plays a critical role in maintaining quantum coherence and delocalization.
  • Quantum coherence and entanglement are key determinants of dynamic localization in complex systems.