Entangling Particles With an Un-entangled Particle

Entanglement is weird.

Two particles that are entangled can co-ordinate with each other. Instantly.

So, let’s toss more weirdness on the fire, shall we?

Two researchers have shown that two distant particles can be entangled with a third particle that has never been entangled with either of them.

In their own words:

“It was shown that two distant particles can be entangled by sending a third particle never entangled with the other two [T. S. Cubitt et al., Phys. Rev. Lett. 91, 037902 (2003)]. In this paper, we investigate a class of three-qubit separable states to distribute entanglement by the same way, and calculate the maximal amount of entanglement which two particles of separable states in the class can have after applying the way.”

You can read the paper here.

 

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