Related Experiment Video
Updated: Jul 10, 2026
12:13
Single-Molecule Imaging of Nuclear Transport
Published on: June 9, 2010
Nonlocality of a single particle.
Jacob Dunningham1, Vlatko Vedral
1School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
Physical Review Letters
|November 13, 2007
Summary
This study presents a feasible experimental scheme to demonstrate single-photon nonlocality using realistic initial states, overcoming previous objections. The method is also applicable to massive particles like atoms, verifying their nonlocality.
Area of Science:
- Quantum Physics
- Quantum Information Science
Background:
- The possibility of single-photon nonlocality has been debated.
- Previous experimental schemes faced objections due to unobservable initial states.
Purpose of the Study:
- To propose an experimentally feasible scheme for demonstrating single-photon nonlocality.
- To overcome limitations of prior proposals by using realistic initial states.
Main Methods:
- Development of a novel experimental scheme.
- Utilizing realistic and observable initial states for quantum particles.
Main Results:
- Demonstration of a feasible method to exhibit single-photon nonlocality.
- The proposed techniques are equally applicable to atoms.
Conclusions:
- This work overcomes objections to previous schemes by employing realistic initial states.
- The scheme provides a pathway to experimentally verify the nonlocality of single photons and massive particles.
Related Concept Videos
02:32The de Broglie Wavelength
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
04:08The Uncertainty Principle
Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He mathematically...
01:10First Law: Particles in One-dimensional Equilibrium
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 we...
01:20Principle of Linear Impulse and Momentum for a Single Particle
Linear momentum is a fundamental concept in physics that describes the motion of an object. It is a vector quantity, having a magnitude equal to the product of its mass and its velocity, and direction along the object's velocity. On the other hand, linear impulse, also known as momentum impulse, is a concept in physics related to the change in the linear momentum of an object. Impulse is a vector quantity defined as the product of force and the time over which the force is applied.
Delving into...
Delving into...
02:45The 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...
03:06The Pauli Exclusion Principle
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information: