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Chapters:
0:00 — Weirdness of quantum mechanics.
1:51 — Intuitive understanding of entanglement.
4:46 — How do we know that superposition is real?
5:40 — The EPR Paradox.
6:50 — Spooky action and hidden variables.
7:51 — Bell’s Inequality.
9:07 — How are objects entangled?
10:03 — Is spooky action at a distance true?
10:40 — What is quantum entanglement really?
11:31 — How do two particles become one?
13:03 — What is non locality?
14:05 — Can we use entanglement for communication?
15:08 — Advantages of quantum entanglement.
15:49 — How to learn quantum computing.
Summary:
Albert Einstein described Entanglement as “spooky action at a distance,” where doing something to one of a But it’s not spooky action at a distance, at all. So what is entanglement?
Electrons have a quantum property called spin that makes them act like little magnets. We’ll always measure it pointing in one direction or the opposite: up or down, say. If we entangle two electrons so that their spins are always pointing in opposite directions, the two spins are said to be correlated. If we entangle the two electrons in this way – and fire them in opposite directions, we don’t know which one of the pair is up and which one is down until we make a measurement. If we find that electron 1 is spin up. We know the spin of electron 2 must be down.
Why isn’t this like a pair of gloves? The handedness of the gloves is there from the start. It never changes. With entangled particles that’s not the case. They are in a superposition. Prior to measurement, there is no definite answer.
How do we know superposition is real? The double slit experiment is good evidence. Entangled particles are stranger, because a measurement on one particle determines the outcome for both of them.
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