Related Experiment Video
Updated: Nov 17, 2025

07:56
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
8.8K
A Time-Symmetric Formulation of Quantum Entanglement
1Independent Researcher, 3182 Stelling Drive, Palo Alto, CA 94303, USA.
Entropy (Basel, Switzerland)
|February 12, 2021
Summary
This study compares quantum entanglement using conventional quantum mechanics and a time-symmetric formulation. The time-symmetric approach reveals different entanglement predictions and offers solutions to quantum measurement problems.
Area of Science:
- Quantum Mechanics
- Quantum Information Theory
- Foundations of Physics
Background:
- The conventional formulation of quantum mechanics relies on a collapse postulate, leading to time asymmetries and unresolved measurement problems.
- Understanding quantum entanglement is crucial for quantum information processing and fundamental physics.
Purpose of the Study:
- To numerically simulate and compare quantum entanglement predictions between the conventional quantum mechanics formulation and a novel time-symmetric formulation.
- To investigate the implications of a collapse-free quantum theory on entanglement and fundamental quantum phenomena.
Main Methods:
- Numerical simulations were employed to model the entanglement of two quanta.
- Comparison of predictions from the conventional quantum mechanics formulation and a time-symmetric, collapse-free formulation.
Main Results:
- While experimental predictions remain identical, entanglement predictions differ significantly between the two formulations.
- The time-symmetric formulation identifies a testable discrepancy in the Hanbury Brown-Twiss experiment's quantum analysis.
- This formulation addresses aspects of quantum nonlocality and measurement problems and resolves time asymmetries.
Conclusions:
- A time-symmetric, collapse-free quantum formulation offers a distinct perspective on entanglement with experimentally testable consequences.
- This approach provides potential solutions to long-standing issues in quantum mechanics, including the measurement problem and time asymmetry.
Related Concept Videos
The Pauli Exclusion Principle
57.4K
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:
57.4K
Symmetry in Maxwell's Equations
3.9K
Once the fields have been calculated using Maxwell's four equations, the Lorentz force equation gives the force that the fields exert on a charged particle moving with a certain velocity. The Lorentz force equation combines the force of the electric field and of the magnetic field on the moving charge. Maxwell's equations and the Lorentz force law together encompass all the laws of electricity and magnetism. The symmetry that Maxwell introduced into his mathematical framework may not be...
3.9K
The Quantum-Mechanical Model of an Atom
54.8K
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.
54.8K
Symmetric Member in Bending
421
In the study of the mechanics of materials, analyzing the behavior of prismatic members under opposing couples is crucial for understanding internal stress distributions, which are essential for structural design. When subjected to couples, a prismatic member experiences internal forces that maintain equilibrium. A couple, characterized by two equal and opposite forces, creates a moment but no resultant force. The internal forces at any section cut of the member must balance these external...
421
The de Broglie Wavelength
31.8K
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...
31.8K
Convolution Properties I
368
Convolution computations can be simplified by utilizing their inherent properties.
The commutative property reveals that the input and the impulse response of an LTI (Linear Time-Invariant) system can be interchanged without affecting the output:
The commutative property reveals that the input and the impulse response of an LTI (Linear Time-Invariant) system can be interchanged without affecting the output:
368

