Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

First experimental evidence for quantum echoes in scattering systems.

C Dembowski1, B Dietz, T Friedrich

  • 1Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany.

Physical Review Letters
|November 5, 2004
PubMed
Summary

Quantum echoes, a self-pulsing phenomenon, were observed in microwave billiards exhibiting soft chaos. Experiments confirmed that the periodic response reveals topological information about the system's dynamics.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Chemokine dynamics after mRNA vaccination.

Immunology letters·2026
Same author

The interplay between COVID-19 and heart disease: Unravelling a complex connection.

Life sciences·2025
Same author

[Evaluation of Weaning Success in Long-Term Invasively Ventilated Patients at a Weaning Center].

Pneumologie (Stuttgart, Germany)·2021
Same author

[Prevalence and treatment of rheumatological adverse events due to immune checkpoint inhibitor therapy].

Zeitschrift fur Rheumatologie·2020
Same author

Parameters predicting COVID-19-induced myocardial injury and mortality.

Life sciences·2020
Same author

Optimized Ki-67 staining in murine cells: a tool to determine cell proliferation.

Molecular biology reports·2019

Area of Science:

  • Quantum physics
  • Nonlinear dynamics
  • Condensed matter physics

Background:

  • Quantum echoes, a self-pulsing effect, have been predicted in systems with mixed phase space dynamics.
  • Superconducting and normal conducting microwave billiards with soft chaos geometry are suitable experimental platforms.

Purpose of the Study:

  • To experimentally observe and characterize quantum echoes in microwave billiards.
  • To verify the theoretical prediction linking the echo period to classical dynamics topology.
  • To demonstrate the extraction of topological information from experimental data.

Main Methods:

  • Experiments were conducted using open superconducting and normal conducting microwave billiards.
  • The geometry of the billiards was designed to exhibit soft chaos, characterized by a mixed phase space with a large stable island.

Related Experiment Videos

  • Incoming microwave pulses were used to probe the system's response.

    • Main Results:

    • The self-pulsing effect, termed quantum echoes, was successfully observed.
    • A periodic response to incoming pulses was confirmed, aligning with theoretical predictions.
    • The period of the observed echoes was found to be associated with the topological features of the classical dynamics, specifically the development of a horseshoe structure.

    Conclusions:

    • Experimental observations confirm the theoretical picture of quantum echoes in soft chaotic systems.
    • The period of quantum echoes provides a direct experimental measure of topological information.
    • Microwave billiards serve as a valuable system for studying quantum-chaotic phenomena and their connection to classical dynamics.