Quantum Entanglement Made Easy: Simple Explanation You Can Understand 🧠

Quantum entanglement is a physical resource, like energy, that is possible between quantum systems. When a coin spins on a flat surface, it’s in a state of superposition between its two faces—head and tails. Similarly, electrons in their natural state exist as a superposition of both up and down spin. Only when measured do they give a definite value of up or down, which, in technical terms, is referred to as the “collapse of the wavefunction”.

In quantum mechanics, wave function collapse occurs when a wave function, which was initially in a superposition of a few states, reduces to a single state due to interaction with the external world.

When a pair of electrons are generated, interact, or share spatial proximity, their spin states can get entangled, which is what scientists call the quantum entanglement of electrons.


Quantum entanglement was first recognized by Einstein, Podolsky, Roson and Schrodinger. In this video, we explain quantum entanglement in simple terms so that it becomes accessible to laymen and children who are interested to know about quantum entanglement



Intro - 0:00
Introduction to Quantum Mechanics - 0:34
Principal quantum numbers - 1:38
Spin quantum number and superposition - 3:08
Schrödinger’s cat experiment - 3:57
Quantum entanglement of electrons - 5:14
Applications of quantum entanglement - 6:27

References:
https://www.nist.gov/news-events/news/2019/07/nists-quantum-logic-clock-returns-top-performance

https://plato.stanford.edu/entries/qt-entangle/
https://news.mit.edu/2018/light-ancient-quasars-helps-confirm-quantum-entanglement-0820
https://magazine.caltech.edu/post/untangling-entanglement
https://export.arxiv.org/ftp/arxiv/papers/1707/1707.01339.pdf



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