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Quantum information is the study of the informational content of quantum states. The most common object of study is the "qubit", the information in a two-state quantum system such as spin-1/2 or photon polarization.

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Actually there is a theorem in quantum mechanics called the no cloning theorem which says that you can't clone a quantum state. However teleportation is possible and has been done experimentally, th …
answered Sep 2 '14 by Avrham Aton
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There are two physical components we use: beam splitters which can simply be a material which reflects light, for instance glass you have light reflected and light which simply pass through. Phase …
answered Apr 2 '15 by Avrham Aton