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Wolfgang Smith and John Taylor California USA

SMITH'S ENTANGLEMENT THEORUM

Extract from John Taylor's 2nd Essay

In an unpublished and incomplete manuscript, which Smith entrusted to me, shortly before his death, he writes:

“What defines the Platonist Weltanschauung is the notion that being is not a sum of parts. This finds its expression in a basic theorem:

Entanglement Theorem: Entanglement is the effect of Irreducible Wholeness(IW). Here, then, we have the ontological key to the Platonist physics. One might perhaps say that quantum phenomena arise from IW, of which they are a direct effect. It may perhaps be said that QM is inherently a Platonist effect—which is why it generally strikes us as incomprehensible. What generally renders it such is that we tend to think in atomistic terms: for us, as a rule, separation precedes unity. And yet, on a deeper level, the matter stands just the other way round. Take the origin of a higher organism: it originates in a single cell. The organism arises, thus, through a process of multiple division”.

From these unpublished writings, together with my recollection of our personal conversations, it is clear to me that the development of a genuinely “Platonist ontology of science” greatly occupied Smith’s thoughts throughout the final period of his life.

In my judgment, Smith’s Entanglement Theorem, encapsulated in the claim that “entanglement is the effect of Irreducible Wholeness”,

RICHARD FEYNMAN-QUANTUM MECHANICS

✨ The Einstein Gap:

Quantum Mechanics and the Nature of Reality

Based on ideas from Richard Feynman’s The Character of Physical Law (1965), his Lectures on Physics, Vol. III (1965), and the original Einstein–Podolsky–Rosen (EPR) paper (1935).

🌌 Introduction

The most important question in modern physics was asked by the man who built its foundations. Albert Einstein identified a crack in quantum mechanics that the physics community ignored for decades. When experiments finally caught up, the crack was exactly where he predicted.

Einstein saw something that many physicists still hesitate to confront. By the end of this discussion, you will understand the real argument he had with quantum mechanics—not the cartoon version (“God does not play dice”), but a deep and unsettling logical challenge that shook the structure of physical theory.

🪙 The Coin Flip: Ignorance vs. Indeterminacy

Imagine flipping a coin and catching it in your hand. Before you open your fist, is it heads or tails?
Your intuition says: “I don’t know, but it is definitely one or the other.”
This is classical ignorance—the information exists; you simply lack it.

Quantum mechanics disagrees. Before observation, the “coin” is neither heads nor tails. It exists in a superposition, a ghostly blend of possibilities that becomes definite only when measured.

Einstein understood the mathematics perfectly—he helped invent it. His concern was not the equations but what they implied about reality itself

🧠 The EPR Argument: Logic Over Mathematics

In 1935, Einstein, Podolsky, and Rosen published the EPR paper—one of the most elegant logical arguments in physics.

Consider two entangled particles flying apart, perhaps light‑years away. According to quantum mechanics, neither particle has a definite spin until one is measured. But if you measure particle A and find “spin‑up,” particle B must instantly be “spin‑down.”

Einstein argued:

  • If measuring A lets you know B’s state without touching B,
  • Then B must have possessed that property all along.
  • Otherwise, A’s measurement would need to send a faster‑than‑light signal to B.

He called this “spooky action at a distance.”
To him, the only reasonable conclusion was that quantum mechanics was incomplete, hiding deeper variables.

📏 John Bell and the Experimental Verdict

For thirty years, the debate remained philosophical. Then, in 1964, John Bell transformed it into physics. He derived Bell’s Inequalities, which set strict limits on how correlated entangled particles could be if the world were truly local.

Quantum mechanics predicted violations of these limits.

In the early 1980s, Alain Aspect and his team performed the decisive experiments. The results were unmistakable:

  • The correlations exceeded Bell’s limits.
  • Local hidden variables were ruled out.
  • Nature is non‑local in a way Einstein found deeply troubling.

Einstein’s conclusion was wrong, but his question was profoundly right. He identified a genuine tension at the heart of quantum theory.

🔍 The Measurement Problem

The measurement problem remains the unresolved frontier of quantum mechanics.

  • If the electron is a wave, what exactly happens when we observe it?
  • When does the wave function collapse?
  • Does Schrödinger’s cat remain in a superposition until a human looks?

Interpretations abound—Many‑Worlds, pilot‑wave theory, objective collapse—but none command consensus. Each demands a heavy philosophical price:
🌐 non‑locality,
🌲 infinite branching universes, or
👁 an ill‑defined role for the observer.

🌟 Conclusion: The Value of the Question

Today, entanglement powers quantum computing, cryptography, and teleportation. What Einstein saw as a flaw has become a resource. Yet we still lack a theory that explains what is really happening between measurements.

Einstein’s legacy is not that he disproved quantum mechanics, but that he refused to ignore the sealed room in the structure of physics. A theory that predicts outcomes without describing reality is like a map without a territory.

He reminds us that scientific progress requires the courage to stare directly at the gaps in our understanding—and refuse to look away. One might rider that this interpretation is somewhat tainted by Einstein's understandable ontological bias but nonetheless like Galileo and other great figures of the Scientific Revolution he had irrepressible ambition yet surely he would have hoped for a different outcome.

NOBEL PRIZE FOR PHYSICS 2022

Experimental Physics of Entanglement

 ⭐ Overview

Alain Aspect’s three landmark experiments (1980–1982) progressively closed key loopholes in Bell‑test physics, demonstrating that quantum entanglement cannot be explained by any local hidden‑variable theory.
His work inspired a new generation of experimentalists—most notably John Clauser and Anton Zeilinger—whose refinements in detector efficiency, spacelike separation, and quantum information applications led directly to the 2022 Nobel Prize.


🔬 1. Aspect’s Three Experiments (1980–1982)

Aspect’s program at Orsay unfolded in three escalating tests, each designed to eliminate a loophole or strengthen the empirical force of Bell’s theorem.


Experiment 1 (1980): Two‑Channel Polarizer Experiment


Goal: Improve on earlier Bell tests by using two‑channel polarizers to detect both outcomes (transmitted and reflected).
Thinking:

  • Earlier experiments (e.g., Clauser–Horne–Shimony–Holt) used single‑channel polarizers, which introduced “fair sampling” assumptions.
  • Aspect wanted a cleaner, more symmetric detection scheme.

Outcome:

  • Confirmed violation of Bell inequalities with improved detection symmetry.
  • Still left the locality loophole open (settings were fixed during photon flight).
     

Experiment 2 (1981): Improved Source & Fast Switching Prototype


Goal: Increase photon pair production and prepare for a dynamic‑switching test.
Thinking:

  • To close the locality loophole, the measurement settings must change while the photons are in flight.
  • This required a brighter entangled‑photon source and fast‑switching technology.

Outcome:

  • Demonstrated strong Bell‑inequality violations with a more robust setup.
  • Set the stage for the decisive 1982 experiment.
     

Experiment 3 (1982): Time‑Varying Analyzer (Fast‑Switching) Experiment


Goal: Close the locality loophole by switching polarizer orientations faster than light could travel between the detectors.
Method:

  • Used acousto‑optic modulators switching at ~50 MHz.
  • Each analyzer “jumped” between two orientations during the photons’ flight.

Thinking:

  • If local hidden variables were responsible, the photons would need to “know” the polarizer settings in advance.
  • Rapid switching prevented any subluminal communication between detectors.

Outcome:

  • Bell inequalities violated by 5 standard deviations.
  • First experiment to convincingly remove the locality loophole.
  • Widely recognized as a turning point in the foundations of quantum mechanics.

👥 2. Who Followed Aspect? Key Experimentalists After 1982


Aspect’s work catalyzed a global effort to close all loopholes and build quantum technologies.


John F. Clauser (USA)

  • Conducted the first experimental Bell test (CHSH experiment, 1969–1972).
  • Faced skepticism from the physics community, but his work laid the foundation for Aspect’s refinements.
    Springer


Anton Zeilinger (Austria)


  • Pioneered high‑efficiency entanglement sources, long‑distance entanglement distribution, and quantum teleportation.
  • Demonstrated entanglement over kilometres of optical fibre and free space.
  • Developed entanglement‑based quantum information protocols.
  • Zeilinger’s work transformed Bell tests from foundational

              physics into quantum technologies.


Other contributors (not Nobel‑awarded but crucial)


  • Gregory Weihs (1998): First spacelike‑separated Bell test with fast random switching.
  • Paul Kwiat: High‑efficiency entangled photon sources.
  • Ronald Hanson (2015): First loophole‑free Bell test using electron spins in diamond NV centres.
  • Saul Perlmutter, Hensen et al. (2015): Multiple independent loophole‑free tests.

These experiments collectively closed:

  • Locality loophole
  • Detection loophole
  • Freedom‑of‑choice loophole


🏅 3. How This Led to the 2022 Nobel Prize in Physics


The Nobel Committee awarded the 2022 prize jointly to:

  • John Clauser – for the first Bell test (CHSH).
  • Alain Aspect – for the decisive 1982 fast‑switching Bell test.
  • Anton Zeilinger – for entanglement‑based quantum information science.

Why they won:

  • They provided experimental proof that quantum entanglement is real and cannot be explained by any local hidden‑variable theory.
  • Their work laid the foundation for: 
    • Quantum cryptography
    • Quantum teleportation
    • Quantum networks
    • Quantum computing architectures


The Nobel citation explicitly recognized their contributions to the “foundations of quantum mechanics and quantum information science.”

Royal Swedish Academy of Sciences 4 October 2022

Scientific Background on the Nobel Prize in Physics 2022

 

✅ 1. Entanglement as Non‑Separable, Single‑System Behaviour Across Distance

Schrödinger on non‑separability

“When two systems… enter into temporary physical interaction… and when after a time of mutual influence the systems separate again, then they can no longer be described in the same way as before, viz. by endowing each of them with a representative of its own… By the interaction the two representatives… have become entangled.”
NobelPrize.org
 

This is the Committee’s foundational statement: after separation, the parts no longer have independent states.

✅ 2. The EPR Argument: Correlations Between Separated Systems

Einstein–Podolsky–Rosen (1935)

“Einstein, Podolsky and Rosen… argued that quantum mechanics does not provide a complete description of physical reality.”
NobelPrize.org
 

The Committee then summarises the EPR logic:

“Discussion of probability relations between separated systems…”
NobelPrize.org
 

This is the formal origin of the “correlation at a distance” problem.

✅ 3. Bell’s Insight: Correlations Stronger Than Any Local Theory Allows

Bell’s theorem as the decisive test

“Bell showed that if hidden variables exist, the experimental results would obey a mathematical inequality. However, quantum mechanics can violate this inequality.”
Physics
 

This is the Committee’s clearest statement that quantum correlations exceed anything possible under local causality.

✅ 4. Spacelike Separation: No Signal, No Influence, Yet Correlation

Although the Scientific Background does not use the phrase “spacelike separation” explicitly in the snippet retrieved, it does state the essential physical content:

Quantum mechanics predicts correlations without any signal

“If Alice measures her particle, then she learns something about Bob’s particle—as if her measurement instantaneously changed the uncertainty* about the state of his particle.”*
Physics
 

Einstein’s objection

“To avoid such ‘spooky action at a distance’, Einstein proposed… hidden variables…”
Physics
 

This is the Nobel Committee’s own articulation of the paradox:
measurement here changes knowledge there, without any physical influence.

✅ 5. The Committee’s Explicit Statement of the Quantum Prediction

Non‑local correlations stronger than any classical model

“Quantum mechanics predicts higher values for the correlation between the results than is possible through hidden variables.”
NobelPrize.org
 

This is the formal statement that quantum correlations exceed all local‑realist bounds.

✅ 6. Entanglement as a Single Extended System

The key conceptual statement

“A pure quantum state is entangled means that it is not separable.”
NobelPrize.org
 

This is the Committee’s technical definition:
entangled systems behave as one system, even when spatially separated.

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