Related Experiment Video
Updated: Aug 30, 2025
09:19
Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
Published on: July 29, 2013
11.5K
Experimental Demonstration of Genuine Tripartite Nonlocality under Strict Locality Conditions
Liang Huang1,2,3, Xue-Mei Gu1,2,3, Yang-Fan Jiang4
1Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China.
Physical Review Letters
|August 26, 2022
Summary
Researchers experimentally confirmed genuine tripartite nonlocality, a fundamental quantum feature. This finding demonstrates that nature
Area of Science:
- Quantum Information Science
- Foundations of Physics
- Experimental Quantum Mechanics
Background:
- Nonlocality is a key quantum phenomenon defying classical intuition.
- Recent research suggests nature's nonlocality is at least tripartite.
- Genuine tripartite nonlocality cannot be replicated by bipartite nonclassical resources and shared randomness.
Purpose of the Study:
- To experimentally demonstrate genuine tripartite nonlocality.
- To test the limits of quantum correlations in a network setting.
- To disprove simulations of tripartite nonlocality using bipartite resources.
Main Methods:
- Utilized a photonic quantum triangular network.
- Ensured strict locality constraints via spacelike separation of events.
- Employed fast quantum random number generators and high-speed polarization measurements.
- Allowed for fair sampling assumption and postselection.
Main Results:
- Observed a locality-loophole-free violation of a Bell-type inequality.
- Achieved a violation significance of 7.57 standard deviations.
- Used a postselected tripartite Greenberger-Horne-Zeilinger state with high fidelity (93.13±0.24)%.
Conclusions:
- Conclusively demonstrated genuine tripartite nonlocality in an experiment.
- Provided strong evidence against simulating tripartite nonlocality with bipartite resources and shared randomness.
- Reinforced the counterintuitive nature of quantum mechanics and its implications for fundamental physics.
More Related Videos
05:15The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
Published on: February 19, 2018
10.9K
07:56A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
8.6K
Related Concept Videos
01:16Second Uniqueness Theorem
1.1K
Consider a region consisting of several individual conductors with a definite charge density in the region between these conductors. The second uniqueness theorem states that if the total charge on each conductor and the charge density in the in-between region are known, then the electric field can be uniquely determined.
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the...
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the...
1.1K
01:17Moment-Area Theorems
331
The Moment-Area Theorem is crucial in structural engineering for analyzing beam bending, particularly in applications like building floor supports. This theorem utilizes the geometric properties of the elastic curve, which depicts how a beam deforms under load, to simplify the calculations of deflections and slopes.
The theorem is divided into two parts. The first part connects the angle between tangents at any two points on the beam's elastic curve to the area under a curve derived by...
The theorem is divided into two parts. The first part connects the angle between tangents at any two points on the beam's elastic curve to the area under a curve derived by...
331
01:15Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
471
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
471
01:18First Law: Particles in Two-dimensional Equilibrium
5.2K
Recall that a particle in equilibrium is one for which the external forces are balanced. Static equilibrium involves objects at rest, and dynamic equilibrium involves objects in motion without acceleration; but it is important to remember that these conditions are relative. For instance, an object may be at rest when viewed from one frame of reference, but that same object would appear to be in motion when viewed by someone moving at a constant velocity.
Newton's first law tells us about...
Newton's first law tells us about...
5.2K
01:22Local Attraction
111
Local attraction refers to disturbances in compass readings caused by magnetic influences from nearby objects such as metal fences, buried pipes, vehicles, buildings, power lines, or natural iron ore deposits. Small items like wristwatches, steel tools, or belt buckles can also interfere with the compass by creating local magnetic fields that distort the Earth's natural magnetic field. These distortions lead to inaccurate readings, posing navigation and land surveying challenges.Local...
111
01:10First Law: Particles in One-dimensional Equilibrium
7.0K
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If...
7.0K