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Main positions:Director, High Performance Computing Platform, PKU
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School/Department:Institute of Theoretical Physics

Lei Yian

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Education Level: Postgraduate (Doctoral)

Administrative Position: Associate Professor

Alma Mater: Peking University

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A Comprehensive Comparison Between Natural Quantum Theory (NQT) and "Spooky" View Regarding Quantum Entanglement
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A Comprehensive Comparison Between Natural Quantum Theory (NQT) and "Spooky" View Regarding Quantum Entanglement

I. Bell's Inequality: The "What" and the "Why"

Bell's Theorem (Bell, 1964) is fundamentally a mathematical theorem: if measurement outcomes are determined by pre-existing local hidden variables, then certain combinations of correlation functions must satisfy an upper bound. In the CHSH form:

∣S∣=∣E(a,b)−E(a,b′)+E(a′,b)+E(a′,b′)∣≤2S=E(a,b)E(a,b)+E(a,b)+E(a,b)2

where E(a,b)E(a,b) is the correlation function for measurements at polarizer angles aa and bb . Quantum mechanics predicts that ∣S∣S can reach 22≈2.828222.828 , a prediction confirmed by experiments.

The violation of Bell's inequality directly rules out mechanical, pre-determined local hidden variable models. These are models assuming that each photon pair carries definite polarization properties independent of the measurement settings from the moment of creation, and that there is no causal connection between the two ends during measurement.

Crucially: Violating Bell's inequality does not uniquely point to "instantaneous collapse at a distance upon measurement." It excludes a specific class of models, but Bell's theorem itself remains silent on alternative physical mechanisms.

II. Comparison of Two Interpretations

The Stance of "Spooky" Quantum Mechanics (Standard Orthodox Interpretation)

The standard interpretation posits that entangled photon pairs do not possess definite polarization states before measurement but exist in a superposition state ∣Ψ−⟩=12(∣HV⟩−∣VH⟩)Ψ=21(HVVH⟩) . Measuring one end causes the "collapse" of the entire state, instantaneously determining the result at the other end. Its characteristics include:

  • Photons are treated as point particles yet endowed with a polarization "direction"—a conceptual contradiction in itself: how can a point with no spatial extension carry directionality?

  • It provides no physical mechanism to explain how this "instantaneous influence" occurs.

  • It equates the violation of Bell's inequality directly with the "reality of action-at-a-distance," while evading inquiry into the physical process.

  • When faced with the question "Why?", the answer is essentially "That's just how quantum mechanics is"—a refusal to explain.

The Stance of NQT/GAI

NQT offers a completely different physical picture:

Core Mechanism: Establishment of a Global Polarization Mode.
Once the experimental apparatus (light source, BBO crystal, polarizers at both ends) is set up, light continuously emitted by the source propagates, reflects, and interferes throughout the entire system. The polarizers suppress components perpendicular to their optical axes while transmitting and reflecting parallel components. These reflected waves travel back to the crystal region, interacting with the crystal to gradually establish a global polarization field structure dominated by the transmission directions of the two end polarizers.

In this picture:

  • The correlation is neither "pre-existing" (thus avoiding the premises excluded by Bell's theorem) nor "generated instantaneously at a distance upon measurement."

  • The correlation is dynamically established over a period before the measurement by the entire experimental apparatus acting as an optical system, through the propagation and interaction of light.

  • This is a fully local and causal process, requiring only light-speed propagation, with no need for any action-at-a-distance.

III. Comparison of Key Experimental Predictions

This represents the most decisive difference between the two theoretical frameworks.

表格

Experimental Condition Prediction by "Spooky" QM Prediction by NQT
Standard Bell Experiment (Steady-state source) Violation of Bell's Inequality. Violation of Bell's Inequality (Consistent).
Significantly unequal distances from crystal to polarizers Unclear; likely still violates since instantaneous collapse is distance-independent. However, measurements are not synchronized, undermining the basis for "simultaneous collapse." Furthermore, causality issues arise that cannot be explained. Still violates, as the conditions for establishing the global mode remain unchanged.
Short-pulse laser ensuring reflected light from polarizers cannot reach the BBO crystal (Destroying global mode establishment) Still violates (Independent of apparatus details). Violation disappears or is significantly weakened.
Bell-type experiment with non-entangled photons Should not violate Bell's Inequality. Can violate (Global mode does not depend on quantum preparation of an "entangled state").

The fourth row is particularly critical: Existing experiments have shown that non-entangled photons can also violate Bell's inequality. This indirectly supports the NQT physical picture—the source of correlation is not the "entanglement" of the quantum state itself, but the optical structure of the experimental apparatus.

IV. The Short-Pulse Experiment: A Decisive Test for NQT

NQT's sharpest prediction concerns the use of ultra-short pulse lasers (where the pulse duration is far shorter than the round-trip time for light to travel from the polarizers to the BBO crystal). This cuts off the feedback from the polarizers to the source within the time window, preventing the establishment of the global polarization mode. Under these conditions:

  • If the violation of Bell's inequality disappears: NQT gains strong support, and the "spooky action-at-a-distance" explanation of standard QM is severely questioned.

  • If the violation persists: The global mode mechanism of NQT would require revision.

This is a clear, operational, and decisive experiment. It is exactly what the scientific method demands: competing theories must be distinguishable by experiment.

Clarification on Causality: NQT fundamentally rejects the concept of "instantaneous entanglement" because it violates causality and the principle of locality. While "Spooky" QM denies superluminal information transmission, it fails to clarify whether the "cause of instantaneous romote collapse" itself involves causality, leaving a gap in its physical logic.

V. On Scientific Integrity

I have heard rumors that relevant experiments have been conducted with results unfavorable to the "spooky" view and supportive of NQT, yet these results remain unpublished. This touches upon the most fundamental ethical code of the scientific community.

Scientific integrity demands that the publication of experimental results must not depend on whether they align with mainstream expectations. Richard Feynman, in his famous 1974 Caltech commencement address, stated: "The first principle is that you must not fool yourself — and you are the easiest person to fool." He described this spirit as the antithesis of "cargo cult science"—namely, radical honesty, including the publication of results that contradict one's own hypotheses or the prevailing paradigm.

Suppressing experimental results that challenge the mainstream paradigm may stem from various reasons: concerns about career prospects (the cost of challenging orthodoxy), paradigm bias in peer review, self-censorship of "heretical" results, and group effects in the sociology of science. However, regardless of the reason, concealing experimental results is a betrayal of the scientific spirit.

History is replete with such precedents: Ignaz Semmelweis's handwashing theory was suppressed for decades; Barry Marshall's discovery that H. pylori causes stomach ulcers was mocked; Shechtman's discovery of quasicrystals was publicly rejected by Linus Pauling. The history of scientific progress is, to a large extent, the history of heresies eventually being acknowledged.

VI. Conclusion

From the perspective of physical methodology, the contrast between NQT and "Spooky" Quantum Mechanics reveals a striking asymmetry:

  • NQT provides an understandable physical mechanism (causal establishment of a global polarization mode), clear experimental predictions (the short-pulse experiment), and existing indirect experimental support (violation of Bell's inequality by non-entangled photons).

  • "Spooky" Quantum Mechanics provides a mathematical description of existing experiments (which it does very well) but is blank regarding physical mechanism. "Instantaneous action-at-a-distance" is not an explanation; it is an abandonment of explanation. In essence, "Spooky" QM offers no physics and no mechanism; instead, it demands that people forcibly accept the "weirdness" of the quantum world.

A theory must not only describe known experiments but also propose new, distinguishable predictions. NQT has achieved this. The scientific community has a responsibility to take these predictions seriously, conduct decisive experiments impartially, and honestly publish the results—regardless of where they point. This is not the right of any individual or theory, but a requirement of the scientific method itself.