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Related Concept Videos

The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra. Schrödinger...
The de Broglie Wavelength02:32

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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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Updated: May 31, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
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Published on: November 11, 2013

Observation of quantum information collapse-and-revival in a strongly-interacting Rydberg atom array.

De-Sheng Xiang1, Yao-Wen Zhang1, Hao-Xiang Liu1

  • 1National Gravitation Laboratory, School of Physics, Huazhong University of Science and Technology, Wuhan, China.

Nature Communications
|May 29, 2026
PubMed
Summary
This summary is machine-generated.

Quantum information scrambling in Rydberg atom arrays shows a unique collapse-and-revival pattern, differing from chaotic and localized systems. This study tracks quantum information dynamics, offering insights into ergodicity-breaking systems.

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Last Updated: May 31, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
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Area of Science:

  • Quantum physics
  • Quantum information science
  • Condensed matter physics

Background:

  • Isolated quantum many-body systems typically scramble local information irreversibly.
  • Ergodicity-breaking systems offer alternative information dynamics.
  • Rydberg atom arrays exhibit unique interactions via the blockade effect.

Purpose of the Study:

  • Investigate unconventional quantum information scrambling in Rydberg atom arrays.
  • Track quantum information and transport dynamics using advanced measurement techniques.
  • Characterize information dynamics in systems with kinetic constraints.

Main Methods:

  • Measurement of out-of-time-ordered correlators (OTOCs).
  • Quantification of Holevo information.
  • Utilizing Rydberg atom arrays for quantum simulations.

Main Results:

  • Observed spatio-temporal collapse-and-revival of quantum information.
  • Demonstrated information dynamics distinct from chaotic and many-body localized systems.
  • Showcased a digital-analogue approach to control quantum information propagation.

Conclusions:

  • Rydberg atom arrays exhibit unique quantum information scrambling behaviors.
  • Kinetic constraints lead to novel information dynamics in many-body systems.
  • Coherent reversal of time evolution and information steering are achievable in near-term quantum devices.