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Related Concept Videos

Body Temperature01:25

Body Temperature

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The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
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Body Temperature01:07

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Body temperature reflects the equilibrium between heat production and heat loss within the body. Most heat is generated by metabolically active tissues, particularly the liver, heart, brain, kidneys, and endocrine organs. At rest, skeletal muscles contribute 20–30% of total heat production, but during vigorous exercise, this can increase up to 30–40 times.
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Free-body Diagram01:28

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Composite Bodies00:55

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Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
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Photon Subtraction by Many-Body Decoherence.

C R Murray1, I Mirgorodskiy2, C Tresp3

  • 1Center for Quantum Optics and Quantum Matter, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK 8000 Aarhus C, Denmark.

Physical Review Letters
|March 31, 2018
PubMed
Summary
This summary is machine-generated.

We discovered a quantum coherence protection process in atomic Rydberg ensembles. Scattering of one photon shields others from decoherence, enabling quantum light manipulation and single-photon subtraction.

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Area of Science:

  • Quantum optics
  • Atomic physics
  • Many-body physics

Background:

  • Investigating interactions between quantum fields and matter is crucial for quantum technologies.
  • Atomic Rydberg ensembles offer a platform for strong light-matter interactions.

Purpose of the Study:

  • To experimentally and theoretically study the scattering of photonic quantum fields from atomic Rydberg ensembles.
  • To understand the dissipative quantum dynamics and spatial decoherence of stored photons.
  • To explore applications in quantum information processing.

Main Methods:

  • Deriving an exact solution for scattering-induced spatial decoherence in the many-body limit.
  • Conducting experiments on the scattering of photonic quantum fields.
  • Analyzing the correlated coherence-protection process.

Main Results:

  • An exact solution for the decoherence of multiple stored photons was derived.
  • A correlated coherence-protection mechanism was revealed, where one photon's scattering protects others.
  • Experimental demonstration of single-photon subtraction capability was achieved.

Conclusions:

  • The scattering of light in Rydberg ensembles exhibits a protective effect on quantum coherence.
  • This effect provides a robust method for quantum light manipulation.
  • The findings pave the way for advanced quantum information processing applications.