Related Experiment Video
Updated: May 7, 2025
08:55
Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging
Published on: July 12, 2022
4.7K
Entanglement microscopy and tomography in many-body systems.
Ting-Tung Wang1, Menghan Song1, Liuke Lyu2
1Department of Physics and HK Institute of Quantum Science & Technology, The University of Hong Kong, Hong Kong, Hong Kong.
Nature Communications
|January 2, 2025
Summary
Entanglement microscopy reveals multipartite entanglement in quantum matter. This method studied quantum critical points, finding short-range entanglement in the Ising model and power-law decay near a Dirac fermion transition.
Area of Science:
- Quantum Information Science
- Condensed Matter Physics
- Many-Body Physics
Background:
- Quantum entanglement is key to understanding quantum matter.
- Characterizing entanglement in complex many-body systems remains a challenge.
Purpose of the Study:
- To develop and apply a novel protocol, entanglement microscopy, for revealing multipartite entanglement.
- To investigate the entanglement structure near quantum critical points (QCPs) in 2D spin and fermionic systems.
Main Methods:
- Entanglement microscopy protocol applied to the reduced density matrix of microscopic subregions.
- Analysis of the transverse field Ising model and a Gross-Neveu-Yukawa transition of Dirac fermions.
Main Results:
- Ising QCP shows short-range entanglement with sudden death in space and temperature.
- Gross-Neveu QCP exhibits power-law decaying fermionic entanglement consistent with conformal field theory (CFT) exponents.
- No detectable tripartite entanglement was found near the 2D Ising QCP, unlike in 1D.
Conclusions:
- Entanglement microscopy is effective for characterizing multipartite entanglement in quantum critical systems.
- The study provides insights into the nature of entanglement at different types of QCPs.
- General scaling of multipartite entanglement measures at criticality was established.
More Related Videos
Related Concept Videos
01:07Electron Microscope Tomography and Single-particle Reconstruction
2.3K
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
2.3K
01:15Transmission Electron Microscopy
5.2K
In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400...
5.2K
01:21Tandem Mass Spectrometry
763
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and signal-to-noise ratio for the analyte. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.
Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called collision-induced...
Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called collision-induced...
763
01:10Computed Tomography
4.1K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
4.1K