How Quantum Entanglement Works

In summary, the conversation discusses a link to an article explaining quantum entanglement without using math but with pictures. One person finds it to be a good and easy read, while another disagrees with its explanation of the topic. They also mention a link to a completely unrelated topic.
  • #1
Thangalin
3
0
Hey, folks.

A pretty light read on how quantum entanglement works, starting from first principles without using math but with lots of pictures. Quite good!

http://www.joot.com/dave/writings/articles/entanglement/

Ciao!
T
 
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  • #2
Thanks for the link. I will read it.

-Edgardo
 
  • #3
A "light read", yes, but as an explanation of entanglement I'm afraid the link is no use at all. The mere fact (if indeed it is a fact?) that members of a pair of "photons" emitted under parametric down-conversion have orthogonal polarisations does not conflict at all with local realism.

Caroline
 
  • #4
Interesting link, thanks. :smile:
 
  • #5
The link to "quantum entanglement and deep space propulsion" is however totally wrong:

Therefore, were two specimens of cesium (to take one example; other materials would also work) to be entangled on earth, then one of the specimens lofted into space, exciting the earthbound cesium sample to produce ions would result in the space-traveling cesium sample becoming energetically excited and producing ions like its earthbound counterpart.

:rofl: :rofl:

cheers,
Patrick.
 

1. What is quantum entanglement?

Quantum entanglement is a phenomenon in quantum mechanics where two or more particles become connected in such a way that the state of one particle affects the state of the other, even if they are separated by large distances.

2. How does quantum entanglement work?

Quantum entanglement works through a process called superposition, where particles exist in multiple states simultaneously. When two particles become entangled, their states become correlated, meaning that measuring the state of one particle will affect the state of the other, regardless of the distance between them.

3. Is quantum entanglement instantaneous?

While quantum entanglement may seem like it allows for instantaneous communication between particles, it does not violate the speed of light. The effects of entanglement are seen immediately, but the actual transfer of information still adheres to the speed of light limit.

4. How is quantum entanglement used in technology?

Quantum entanglement has potential applications in quantum computing, cryptography, and teleportation. In quantum computing, entangled particles can be used to perform multiple calculations simultaneously, leading to faster and more powerful computers. In cryptography, entangled particles can be used to create unbreakable codes. And in teleportation, entanglement can potentially allow for the transfer of information between particles without physical communication.

5. Can quantum entanglement be explained by classical physics?

No, quantum entanglement cannot be explained by classical physics. It is a phenomenon unique to the quantum world and is not fully understood even by scientists. The behavior of entangled particles goes against our classical understanding of cause and effect, making it a key area of study in quantum mechanics.

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