Quantum Internet Gets A Boost With New Technique

Quantum Internet Gets A Boost With New Technique

Traditional ways of producing entanglements, necessary for the development of any ‘quantum internet’ linking quantum computers, are not very well suited for fiber optic telecoms networks used by today’s non-quantum internet. However, researchers have come up with a new way to produce such particles that is much more compatible.

A pair of particles, or qubits, become entangled when the quantum state of each of them is inescapably connected to the quantum state of the other particle. Therefore, a measurement performed on one qubit will always be correlated to a measurement on the other qubit, regardless of the distance. This entanglement, famously described in pop-science explanations as ‘spooky action at a distance,’ is key to any quantum communication infrastructure of the future.

Exploiting this spooky phenomenon, researchers can use entangled photons to transfer information between two locations. The sender has half the entangled photons and the receiver has the other half. The two users, for example, can establish a random secret bit string for encryption by the shared entanglement.

Source: Phys.org

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