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

Entanglement energetics at zero temperature.

Andrew N Jordan1, Markus Büttiker

  • 1Département de Physique Théorique, Université de Genève, CH-1211 Geneva 4, Switzerland.

Physical Review Letters
|July 13, 2004
PubMed
Summary
This summary is machine-generated.

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

30 dB on-chip ultra-high inverse weak value amplification.

Optics letters·2026
Same author

Revealing the fuel of a quantum continuous measurement-based refrigerator.

Physical review. E·2026
Same author

Quantum benchmarking of high-fidelity noise-biased operations on a detuned Kerr-cat qubit.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Exploring the Accuracy of Interferometric Quantum Measurements under Conservation Laws.

Physical review letters·2025
Same author

Giant Thermoelectric Response of Fluxons in Superconductors.

Physical review letters·2025
Same author

Supergrowth in speckle patterns.

Optics letters·2024
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Researchers demonstrate that measuring energy fluctuations in quantum systems can quantify entanglement. Larger energy fluctuations directly correlate with greater entanglement, offering a new method for its measurement.

Area of Science:

  • Quantum Information Science
  • Condensed Matter Physics
  • Quantum Computing

Background:

  • Entanglement is a key resource in quantum information science, crucial for quantum computing and communication.
  • Quantifying entanglement, especially in many-body systems, remains a significant challenge.
  • Understanding entanglement with the environment is vital for developing robust quantum technologies.

Purpose of the Study:

  • To introduce a novel method for extracting many-body ground state entanglement information.
  • To establish a direct relationship between energy fluctuations and entanglement.
  • To validate this method through theoretical examples and experimental comparisons.

Main Methods:

  • Utilizing subsystem energy measurements at zero temperature.

Related Experiment Videos

  • Analyzing energy fluctuations in theoretical models like the two-state system and harmonic oscillator.
  • Comparing theoretical predictions with experimental data from recent qubit experiments.

    • Main Results:

    • Demonstrated that larger energy fluctuations in subsystems correspond to greater entanglement.
    • Showcased the effectiveness of energy fluctuation measurements for quantifying entanglement.
    • Provided concrete examples using the two-state system and harmonic oscillator.

    Conclusions:

    • Subsystem energy measurements offer a practical and effective new method for quantifying entanglement.
    • This technique provides valuable insights into quantum entanglement, particularly in relation to environmental interactions.
    • The findings have implications for advancing quantum information processing and quantum metrology.