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January 15, 2006

Teleportation Explained

Posted by Eric at 10:00 pm. Filed under: Science

Quantum entanglement … the key to real life teleportation?

The Entanglement Theory

When a photon (usually polarized laser light) passes through matter, it will be absorbed by an electron. Eventually, and spontaneously, the electron will return to its ground state by emitting the photon. Certain crystal structures increase the likelihood that the photon will split into two photons, both of them with longer wavelengths than the original. Keep in mind that a longer wavelength means a lower frequency, and thus less energy. The total energy of the two photons must equal the energy of the photon originally fired from the laser (conservation of energy).

It is this instant communication between the entangled photons to indicate each other’s polarization that lies at the very heart of quantum entanglement. This is the “spooky action at a distance” that Einstein believed was theoretically implausible.

In his newest book, Aczel (Fermat’s Last Theorem) discusses a great mystery in physics: the concept of entanglement in quantum physics. He begins by explaining that “entanglement” occurs when two subatomic particles are somehow connected or “entangled” with one another, so that when something happens to one particle, the same thing simultaneously happens to the other particle, even if it’s miles away.


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