Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Entropy

Entropy

Salt particles that have dissolved in water never spontaneously come back together in solution to reform solid particles. Moreover, a gas that has expanded in a vacuum remains dispersed and never spontaneously reassembles. The unidirectional nature of these phenomena is the result of a thermodynamic state function called entropy (S). Entropy is the measure of the extent to which the energy is dispersed throughout a system, or in other words, it is proportional to the degree of disorder of a...

¹H NMR: Interpreting Distorted and Overlapping Signals

¹H NMR: Interpreting Distorted and Overlapping Signals

Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...

Electrochemical Systems

Electrochemical Systems

Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...

Absolute Entropies and the Third Law of Thermodynamics

Absolute Entropies and the Third Law of Thermodynamics

Ludwig Edward Boltzmann developed a definition for entropy, which stated that absolute entropy is proportional to the natural logarithm of the number of possible combinations of particles. Entropy stands alone among state functions as the only one whose absolute values can be determined.Consider a gas sample confined to a container. As the container expands, the energy levels of gas molecules become more closely spaced. This increases the number of available energy states, thereby increasing...

Intermolecular Forces and Physical Properties

Intermolecular Forces and Physical Properties

You might also read

Related Articles

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

Sort by

Same author

Exact simulation of pigment-protein complexes unveils vibronic renormalization of electronic parameters in ultrafast spectroscopy.

Nature communications·2022

Same author

Decoherence-Free Rotational Degrees of Freedom for Quantum Applications.

Physical review letters·2020

Same author

Multicolor Quantum Control for Suppressing Ground State Coherences in Two-Dimensional Electronic Spectroscopy.

Physical review letters·2019

Same author

Efficient Simulation of Finite-Temperature Open Quantum Systems.

Physical review letters·2019

Same author

Modulated Continuous Wave Control for Energy-Efficient Electron-Nuclear Spin Coupling.

Physical review letters·2019

Same author

Sensing phases of water via nitrogen-vacancy centres in diamond.

Scientific reports·2018

Search research articles

Related Experiment Video

Updated: Jun 3, 2026

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates

Published on: January 5, 2024

Measuring entanglement in condensed matter systems.

M Cramer¹, M B Plenio, H Wunderlich

¹Institut für Theoretische Physik, Albert-Einstein Allee 11, Universität Ulm, Ulm, Germany.

Physical Review Letters

|March 17, 2011

Summary

Researchers developed a new method to quantify entanglement in many-body systems using only standard experimental techniques. This approach bypasses the need for full state characterization, enabling direct study of quantum correlations.

More Related Videos

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

Molecular Entanglement and Electrospinnability of Biopolymers

Molecular Entanglement and Electrospinnability of Biopolymers

Published on: September 3, 2014

Related Experiment Videos

Last Updated: Jun 3, 2026

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates

Published on: January 5, 2024

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

Molecular Entanglement and Electrospinnability of Biopolymers

Molecular Entanglement and Electrospinnability of Biopolymers

Published on: September 3, 2014

Area of Science:

Quantum Physics
Condensed Matter Physics
Atomic Physics

Background:

Quantifying entanglement in many-body systems is crucial for understanding quantum correlations.
Previous methods required full state characterization, posing a significant experimental challenge.
Genuine quantum correlations in complex systems have been difficult to study directly.

Purpose of the Study:

To develop a novel, experimentally accessible method for quantifying entanglement in spin and cold atom many-body systems.
To remove the obstacle of full state characterization for entanglement measurement.
To enable direct and quantitative experimental studies of quantum correlations.

Main Methods:

Utilizing standard experimental techniques applicable to spin and cold atom systems.
Employing global measurements, such as neutron scattering cross-sections or cold atom time-of-flight distributions.
Requiring no prior assumptions about the system's state in the laboratory.

Main Results:

A lower bound for entanglement can be directly determined from routine global measurements.
Demonstrated applicability to neutron scattering in solid-state samples.
Demonstrated applicability to time-of-flight distributions of cold atoms in optical lattices.

Conclusions:

The proposed scheme successfully quantifies entanglement without full state tomography.
This method significantly simplifies the experimental study of quantum correlations in many-body systems.
The approach is versatile and adaptable to various systems and measurement techniques.