Quantum entanglement connects particles instantaneously regardless of distance from "summary" of The Fabric of the Cosmos by Brian Greene
When two particles become entangled, their properties become intertwined in such a way that the state of one particle is directly related to the state of the other, no matter how far apart they are. This means that if one particle is in a certain state, the other particle will be in a corresponding state, instantaneously. This phenomenon seems to defy our everyday understanding of how the world works because it suggests that information is being transmitted between the particles faster than the speed of light. However, this is not the case. Quantum entanglement does not involve the transmission of physical signals or messages between the particles; rather, it is a fundamental feature of quantum mechanics that allows particles to be connected in a way that transcends traditional notions of distance and time. The entangled particles are not communicating with each other in the conventional sense; instead, they are simply part of a single quantum system that behaves as a whole, even when separated by vast distances. The idea of quantum entanglement was first proposed by Albert Einstein, Boris Podolsky, and Nathan Rosen in 1935 as a way to highlight what they saw as a fundamental flaw in quantum mechanics. They believed that if two particles could become entangled in this way, it would imply the existence of a hidden variable that determined the properties of each particle before they were measured. However, subsequent experiments have shown that quantum entanglement is a real phenomenon that cannot be explained by hidden variables. One of the most famous demonstrations of quantum entanglement is the EPR (Einstein-Podolsky-Rosen) paradox, which involves measuring the properties of entangled particles in such a way that it seems as though information is being transmitted faster than the speed of light. However, further research has shown that this apparent violation of causality is not actually occurring; instead, quantum entanglement is simply a manifestation of the strange and counterintuitive nature of quantum mechanics.- Quantum entanglement is a fascinating and mysterious phenomenon that connects particles in a way that defies our classical understanding of the world. Despite its seemingly instantaneous nature, entanglement does not involve the transmission of physical signals or communication between particles; rather, it is a fundamental aspect of quantum mechanics that highlights the interconnectedness of the universe at the most fundamental level.
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