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What is Quantum Entanglement, and what does it do?
I attempted at learning via online articles.
I attempted at learning via online articles.
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BiGyElLoWhAt said:I also got what seems like different "definitions" of it.
Some things I read made it seem like QE behaved like such: 2 entangled particles -> you measure 1 -> that actually alters the state of the other.
Other places make it sound like this: 2 entangled particles -> you measure 1 -> the only noticible effect on the second is a collapsed wave function.
BiGyElLoWhAt said:where is this 'spooky action at a distance'?
bhobba said:If such exists depends entirely on your conception of locality.
One way for example is to look at it is via the Consistent Histories approach:
http://quantum.phys.cmu.edu/CQT/index.html
Thanks
Bill
bhobba said:The great physicist, Bell, used an amusing analogy of Bertlmann's socks to help explain it:
http://cds.cern.ch/record/142461/files/198009299.pdf
Thanks
Bill
BiGyElLoWhAt said:So I haven't made it very far into that paper yet, but does the "spooky action at a distance" come from the denial of the assertion that nothing 'exists' in the quantum world in advance of measurement? Am I reading this right?
In order for me to say that there IS spooky action at a distance (in the context of EPR), must I first say that nothing is definite in the quantum world before measurement, but, once measured, the object in question is forced into a state; then must I extend this assertion to not only does my measurement force the measured object into a particular state, but it also forces all entangled objects into some (probably, but not necessarily, different) state? But not in the sense that we don't know what state it's in until it's measured, but that it actually doesn't exist in a particular state until measured?
BiGyElLoWhAt said:Thanks for the reply atyy, I've heard the term Bohmian mechanics before, at least I think, I might just be thinking of that queen song.
BiGyElLoWhAt said:I'll have to spend some time looking into it, as it sounds pretty interesting. As always, any links to resources would be greatly appreciated. I probably won't get to it anytime soon, but I'll archive it and check it out later. Links keep me from having to weed through useless information (or near useless) when trying to read about stuff.
Quantum entanglement is a phenomenon in quantum physics where two or more particles become connected in such a way that the state of one particle is dependent on the state of the other, even when they are separated by large distances.
Quantum entanglement works through the process of superposition, where particles exist in multiple states at the same time. When two particles become entangled, their states become linked and any change to one particle will instantly affect the other, regardless of the distance between them.
Quantum entanglement has potential applications in quantum computing, cryptography, and communication. It could also be used for secure data transmission and in quantum teleportation, where information can be transmitted instantly between entangled particles.
One of the main challenges in studying quantum entanglement is maintaining the entanglement between particles, as it is easily disrupted by outside influences. Another challenge is understanding the underlying principles and mechanisms of entanglement, which are still not fully understood.
Quantum entanglement is a fundamental aspect of quantum mechanics and plays a crucial role in understanding the behavior of particles at the subatomic level. It challenges our understanding of classical physics and has led to the development of new theories and technologies in the field of quantum mechanics.