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Quantum Computing 101: Entanglement

Writer: Sandeep Deb VarmanSandeep Deb Varman

Updated: Feb 17


Arthur C Clarke and Thor looking at each other because Thor says 'Magic is science we just don't understand yet' which is a quote by Arthur C Clarke. This is a metaphor for entanglement in quantum mechanics

Remember how Wanda and Vision share that special connection where they instantly know what the other is thinking? That’s surprisingly similar to one of quantum mechanics’ strangest and most powerful features—entanglement!


In our normal world, everything needs time to connect. For example, when you text your friend, that message travels through space, taking tiny fractions of time to reach them. It’s like Thor having to physically swing his hammer to call lightning. But quantum entanglement breaks all these rules—sort of!


When particles become entangled, their states are deeply connected, even if they’re separated by vast distances. Imagine two dancers who are so perfectly in sync that when one moves, the other mirrors them instantly—no matter how far apart they are. When one particle is measured to "spin up," the other will be found to "spin down," as if they’re linked by an invisible thread.


But here’s the twist: they don’t actually send any signals to each other. Their connection comes from their shared quantum origin, not communication. This "spooky action at a distance," as Einstein called it, doesn’t violate the speed of light—it’s just nature behaving in ways that defy our everyday intuition.


This strange connection opens up incredible possibilities. Scientists are using entanglement to create unhackable communication systems, where any attempt to intercept a message immediately breaks the quantum link. They’re also building quantum networks that could one day connect computers across the globe in ways far faster and more secure than today’s internet.


And yes, there’s even something called quantum teleportation—but don’t picture Ant-Man shrinking into the quantum realm just yet. Quantum teleportation transfers the state of a particle (its quantum information) to another, not the particle itself. It’s more like sending a blueprint than physically moving the object.


Just as the Avengers combine their powers to become stronger, entangled particles—or qubits in quantum computing—work together in ways that classical computers can’t match. While we’re still learning to harness this power, entanglement might be the key to creating technology that feels like magic today.


After all, as Thor once said, "Magic is just science we don’t understand yet!"


 
 
 

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