The Birth of the Quantum Internet?

Researchers may have demonstrated a proof-of-concept for a quantum network.

California Institute of Technology (Caltech) profs say they have shown how to entangle a quantum state stored in four spatially distinct atomic memories. They described the process in Nature.

I read about it at Eureka Alert.

The researchers also say that this can serve as “quantum interface between the atomic memories—which represent something akin to a computer “hard drive” for entanglement—and four beams of light, thereby enabling the four-fold entanglement to be distributed by photons across quantum networks. The research represents an important achievement in quantum information science by extending the coherent control of entanglement from two to multiple (four) spatially separated physical systems of matter and light.”

It’s important to understand the difference between a quantum logic gate is and a quantum network. Sometimes, quantum information terms are used interchangeably.

According to Quantiki, a quantum logic gate is a device which performs a fixed unitary operation on selected qubits in a fixed period of time and a quantum network is a device consisting of quantum logic gates whose computational steps are synchronised in time

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: