Tag Archives: double slit experiment

Quantum Erasure.

Oh no wait, erasers.

It’s at around this point that I start thinking “Why on earth did I decide to write something about the quantum eraser?” As if wavefunction collapse and wave-particle duality weren’t hard enough concepts to get your head around at the best of times, introducing the quantum eraser and quantum entanglement will probably make your brain implode completely. I know mine did, and still does every time I read about it. I make a lot of sacrifices for you guys, okay?

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Double Slit Trouble.

And so the blog finally drags on to the point where I have to start talking quantum again. Quantum mechanics is a hell of a thing; it’s both complex and hugely counterintuitive, and it isn’t helped by many of the popular misconceptions about it such as Schrodinger’s cat. I originally wanted to explain how quantum entanglement and the quantum eraser works because it’s one of the most head-screwy bits of physics out there, but then I realised there’s a lot of basic physics knowledge required to understand that that I can’t just take for granted. In particular you really have to know about wave-particle duality and the double slit experiment.

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