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Related Experiment Video

Updated: Nov 27, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Identical Quantum Particles, Entanglement, and Individuality.

¹History and Philosophy of Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands.

Entropy (Basel, Switzerland)

|December 8, 2020

Summary

Quantum particles are not truly indistinguishable, challenging the standard view in physics. This research explores an alternative perspective, reconciling quantum mechanics with classical particle concepts and quantum information theory.

Keywords:

emergence entanglement identical quantum particles indistinguishability the concept of a particle

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Area of Science:

Philosophy of Physics
Quantum Mechanics
Quantum Information Theory

Background:

Classical physics treats particles as distinguishable based on unique properties.
The standard view in the philosophy of physics posits that identical quantum particles are completely indistinguishable.
This indistinguishability doctrine conflicts with ordinary language, classical physics, and current physics practice.

Purpose of the Study:

To analyze the premises of the standard particle indistinguishability doctrine.
To propose and discuss an alternative approach to particle identity in quantum mechanics.
To bridge the conceptual gap between quantum particles and classical particles.

Main Methods:

Critical analysis of the philosophical underpinnings of particle indistinguishability.
Elaboration on previous research concerning particle identity.
Exploration of connections to contemporary quantum information theory.

Main Results:

The standard view of particle indistinguishability is shown to be problematic and irreconcilable with various aspects of physics.
An alternative framework for understanding particle identity is presented.
The proposed alternative offers a smoother transition to the classical limit.

Conclusions:

The doctrine of absolute particle indistinguishability requires re-evaluation.
An alternative perspective on particle identity aligns better with both classical and quantum physics.
This work has implications for understanding quantum information and particle behavior.