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Halls of Shrewd'm / US Policy❤
No. of Recommendations: 9
Quantum physicists make major nanoscopic advance
Summary:
In a new breakthrough, researchers have solved a problem that has caused quantum researchers headaches for years. The researchers can now control two quantum light sources rather than one. Trivial as it may seem to those uninitiated in quantum, this colossal breakthrough allows researchers to create a phenomenon known as quantum mechanical entanglement. This in turn, opens new doors for companies and others to exploit the technology commercially.
https://www.sciencedaily.com/releases/2023/01/2301...
No. of Recommendations: 2
Quantum entanglement could be a game changer in many ways. My favorite is communication at large distances. Though it will be centuries (likely) before humans could be among other stars, if they have an entangled communication device, they could relay information instantly. Instead of signals being constrained by the speed of light.
No. of Recommendations: 1
Quantum entanglement could be a game changer in many ways. My favorite is communication at large distances. Though it will be centuries (likely) before humans could be among other stars, if they have an entangled communication device, they could relay information instantly. Instead of signals being constrained by the speed of light. - 1pg
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Quantum entanglement is a fascinating topic. Theoretically entangled particle could communicate instantaneously across vast distances. But to be entangled, a particle pair needs to start out at a common point. So moving one partner to a distance galaxy to facilitate communication would face the same limitation as sending radio wave based communication in the first place. At least I think that would be the case. Thoughts?
No. of Recommendations: 2
"Theoretically entangled particle could communicate instantaneously across vast distances. But to be entangled, a particle pair needs to start out at a common point." - BHM
Interesting, can't help but wonder if quantum entanglement is a byproduct of the Big Bang.
No. of Recommendations: 1
Interesting, can't help but wonder if quantum entanglement is a byproduct of the Big Bang. - Troy
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I hadn't thought about that. In such a scenario, I wonder if big bang entanglement produces only entangled particle pairs or perhaps all particles are entangled with all others at some level. And we have only stumbled on how to reveal that attribute in one on one pairing even though many to many pairing exists. Fascinating stuff.
No. of Recommendations: 1
Yes, that is correct. You have to entangle them before you separate them. So, given what we know, it would then take a very long time for the device to be deployed in another star system. Once there, they could communicate instantly. Getting there would be the challenge. I wonder about the ramifications of simultaneity that is taught in any special relativity class.
We also could deploy it locally, e.g. Mars.
Also you could put them in embassies around the world for absolutely secure communications.
It's a very cool phenomenon.
No. of Recommendations: 5
Quantum entanglement stems from the EPR paradox. The textbook example is that you have a reaction that emits two photons in opposite directions. To conserve spin, one has to be "spin up" while the other is "spin down". But you can't know which is which, and both photons are in a superposition of both states. When you measure one, it must "choose" a state, but then the other has to "choose" the opposite state to comply with conservation. If you measure them both at precisely the same moment, they will be in opposite states even though they did not have time to communicate within the limits of the speed of light. Thus they are entangled, and are not restricted by the speed of light to communicate their states with each other.
Originally it was a paradox. But we've advanced to the point that we can actually run that test, and it turns out to be correct.
