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

Free Energy Changes for Nonstandard States

Free Energy Changes for Nonstandard States

The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:

The Quantum-Mechanical Model of an Atom

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...

Deactivation Processes: Jablonski Diagram

Deactivation Processes: Jablonski Diagram

Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...

Activation Energy

Activation Energy

Activation energy is the minimum amount of energy necessary for a chemical reaction to move forward. The higher the activation energy, the slower the rate of the reaction. However, adding heat to the reaction will increase the rate, since it causes molecules to move faster and increase the likelihood that molecules will collide. The collision and breaking of bonds represents the uphill phase of a reaction and generates the transition state. The transition state is an unstable high-energy state...

Quantum Numbers

Quantum Numbers

It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.

IR Absorption Frequency: Delocalization

IR Absorption Frequency: Delocalization

Electron delocalization refers to the distribution of electrons across multiple atoms within a molecule rather than being confined to a single atom or bond. This phenomenon is common in systems with conjugated bonds—structures where alternating single and double bonds allow π-electrons to move freely across the network. The movement of electrons stabilizes the molecule and can affect various chemical properties, including vibrational frequencies observed in IR spectroscopy.
In IR spectroscopy,...

You might also read

Related Articles

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

Sort by

Same author

Practical Advantage of Classical Communication in Entanglement Detection.

Physical review letters·2025

Same author

Unmasking the polygamous nature of quantum nonlocality.

Proceedings of the National Academy of Sciences of the United States of America·2024

Same author

Self-Testing in Prepare-and-Measure Scenarios and a Robust Version of Wigner's Theorem.

Physical review letters·2024

Same author

Certification of qubits in the prepare-and-measure scenario with large input alphabet and connections with the Grothendieck constant.

Scientific reports·2023

Same author

Testing Real Quantum Theory in an Optical Quantum Network.

Physical review letters·2022

Same author

Evolution of flowering time in a selfing annual plant: Roles of adaptation and genetic drift.

Ecology and evolution·2022

Search research articles

Related Experiment Video

Updated: Jun 3, 2026

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Activation of nonlocal quantum resources.

Miguel Navascués¹, Tamás Vértesi

¹Departamento Análisis Matemático, Universidad Complutense de Madrid, 28040 Madrid, Spain.

Physical Review Letters

|March 17, 2011

Summary

We discovered specific quantum states that, individually, do not show nonlocality. However, when combined, these states violate Bell inequalities, demonstrating quantum nonlocality activation.

Area of Science:

Quantum Information Science
Quantum Foundations

Background:

Quantum entanglement enables non-classical correlations between particles.
Bell inequalities are used to test for the presence of these quantum correlations.

Purpose of the Study:

To investigate the phenomenon of nonlocality activation in quantum systems.
To identify specific quantum states that exhibit this behavior.

Main Methods:

Analysis of two-qubit bipartite states in a two-setting-two-outcome Bell scenario.
Application of the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality.

Main Results:

Identified two states (ρ1, ρ2) individually lacking nonlocality.
Demonstrated that the combined state (ρ1 ⊗ ρ2) violates the CHSH inequality by 2.023.

More Related Videos

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Related Experiment Videos

Last Updated: Jun 3, 2026

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Found a CHSH-local state (ρ) where its tensor product (ρ⊗2) violates the CHSH inequality.

Conclusions:

Nonlocality can be activated in quantum systems through the combination of locally non-signaling states.
The methods used are adaptable to various Bell scenarios for detecting nonlocality activation.