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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Nonexponential Quantum Decay under Environmental Decoherence.

M Beau1,2, J Kiukas3, I L Egusquiza4

  • 1Department of Physics, University of Massachusetts, Boston, Massachusetts 02125, USA.

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|January 18, 2018
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Summary
This summary is machine-generated.

Deviations from exponential decay are shown in open quantum systems, challenging the standard model. This finding explains recent experimental observations and offers new insights into quantum state dynamics.

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Area of Science:

  • Quantum physics
  • Quantum mechanics
  • Open quantum systems

Background:

  • Quantum systems typically decay exponentially.
  • Environmental decoherence is thought to prevent state reconstruction.

Purpose of the Study:

  • To demonstrate deviations from exponential decay in open quantum systems.
  • To provide a theoretical basis for recent experimental findings.

Main Methods:

  • Analysis of general conditions for deviations from exponential decay.
  • Illustration using exact dynamics under quantum Brownian motion.

Main Results:

  • Existence of deviations from exponential decay shown under general conditions.
  • Quantum Brownian motion dynamics used to illustrate the findings.

Conclusions:

  • Standard exponential decay law is not universally applicable to open quantum systems.
  • The observed deviations can explain recent experimental results.