It Happened. The First True Quantum Teleportation Is a Fact

A Historic Record in Quantum Physics

The laboratory at the University of Stuttgart just set one of the most important records in quantum physics this year. Professor Peter Michler’s team has, for the first time in history, teleported a complete quantum state between two photons that originated in two completely different quantum dots—that is, in two separate, independent light “emitters.”

Why Is This So Important?

In the classic internet, you can simply amplify the signal in an optical fiber along the way, but you cannot boost quantum information like this—it is too fragile and easily destroyed.Therefore, the future quantum internet needs new devices capable of flawlessly transmitting such signals between distant nodes, just as routers do in a classical network today.

German Scientists Broke the Barrier

They took two independent quantum dots, connected them with a standard telecommunications fiber optic cable, and teleported the quantum state over a distance of approximately 10 meters. The efficiency? Over 70 percent.

“This is the first such achievement in the world,” says Professor Peter Michler, head of the team. “We showed that we can transmit quantum information between completely different transmitters as if they were one.”

For now, the team conducted the experiment over a distance of just 10 meters, but this is only the first step. While not yet perfect, the result is quite impressive for a pioneering effort.

What Exactly Was Teleported?

Not the photon itself, but its entire “quantum character”—polarization, phase, entanglement—everything that makes quantum information impossible to copy and impossible to eavesdrop on.

True Quantum Teleportation: What Does It Mean in Practice?

It means that in the future, we will be able to build “intermediate stations” for the quantum Internet—just like we have routers and amplifiers today—except they will not destroy the delicate quantum information. And this opens the way to a network where:

• Encryption is mathematically unbreakable.
• The network will instantly detect any eavesdropping.
• The system can transmit data over any distance without loss of security.

The true quantum teleportation Experiment Details

The scientists just published the details of the experiment in the prestigious journal Nature Communications.

Scientists are already announcing the next step: they want to extend the distance to several hundred meters, and then to kilometers. And they aim to improve the efficiency to a level close to 100 percent. The development of true quantum teleportation is key to this goal.

Read this article in Polish: Stało się. Pierwsza prawdziwa teleportacja kwantowa jest faktem