Is it possible for two human beings to be quantum entangled - by Mark, John Fernee - Quora Question Review

This document contains a review of the answer by Mark, John Fernee on the question in Quora: "Is it possible for two human beings to be quantum entangled"
To order to read all the answers select: https://www.quora.com/Is-it-possible-for-two-human-beings-to-be-quantum-entangled

Contents

Reflection

1. Answer Review

Yes. It is the natural state according to quantum theory. In fact everything is entangled. The problem is that if you don't know the details of the entanglement, it will seem as if there is no entanglement.
A claim that everything is entangled does not make sense. For example it does not make sense to call that the two stars of a binary system are entangled. It also does not make sense that the two stars are correlated.

Why is everything entangled? Because everything interacts. Interactions result in entanglement. This is essentially nonlocal determinism… one state causes the next state and the next state and so on…

The two stars of a binary star system interact with each other. This is called a gravitational interaction, but has nothing to do with entanglement.
This sort of entanglement is just a complicated nonlocal mess. This is where decoherence theory is introduced to make sense of the mess. The essence of decoherence theory is to average out the entangled mess. This can be justified by taking a local perspective. Using this approach, the local environment can seem to be entirely classical.

The implications for this is that while two people in close proximity are certainly entangled, the entanglement is far too complex to comprehend, so that it is effectively non-existent.

Therefore there are actually two answers to this question. The above answer is actually meaningless if you can't do any experiment to reveal this entanglement. This suggests that no is the correct answer. Just be aware that there is the caveat that “no” is with respect to the ability to do a meaningful experiment that can reveal the entanglement.

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Reflection 1 - Question Review

What is the defintion of entangled? It must be something physical, but different from correlated.

A related question is: Is it possible for two humans to be correlated?
The question is: yes, but not all humans are correlated in the same manner.
For example: a human twin of the same sex are correlated in the most aspects compared with two humans of different sexes born in two different continents. Those two humans are the least correlated.

Two photons created at the same instance, at an experiment, can be called correlated. To establish this correlation both photons have to be measured. This correlation implies that when both photons are measured, one photon is a "+", and the other one a "-". This also means, that if the same experiment is repeated, and one photon is measured a "+" the measurement of the other photon can be predicted as being a "-"

Many physicists call such a correlation: entangled. But is there a difference between correlation and entangled in this experiment?
Does it make sense to call the correlations between two human twins of the same sex: entangled?
Many physicists also claim that the entanglement is created at the moment when the particle is measured. Generally speaking when any measurement is performed only one parameter is measured and any such measurement involves certain local changes.

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Created: 1 June 2023

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