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American Focus > Blog > Tech and Science > Ultra-secure quantum data sent over existing internet cables
Tech and Science

Ultra-secure quantum data sent over existing internet cables

Last updated: April 25, 2025 9:25 pm
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Ultra-secure quantum data sent over existing internet cables
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A significant milestone has been achieved in the development of a quantum internet, as two data centers in Germany have successfully exchanged quantum secure information using existing telecommunication fibers at room temperature. This advancement eliminates the need for special communications equipment and the requirement for cooling quantum particles to extremely low temperatures, which is common in most quantum communications setups.

The concept of a quantum internet, where information is encoded into quantum particles of light known as photons, is rapidly progressing beyond the confines of the laboratory. Recent achievements include a quantum link between ground stations in China and South Africa facilitated by a microsatellite, as well as the introduction of the first operating system for quantum communication networks.

In a recent experiment conducted by Mirko Pittaluga and his team at Toshiba Europe Limited, quantum information was successfully transmitted through optical fiber between facilities located approximately 250 kilometers apart in Kehl and Frankfurt, Germany. The data also passed through a third station situated around 150 kilometers from Frankfurt. Over long distances, photons traveling through fiber optic cables can be lost or corrupted, necessitating the use of “quantum repeaters” to mitigate these losses. The intermediate station in this experiment played a crucial role in enhancing the network’s performance compared to simpler connections between the two endpoints.

A notable aspect of this experiment was the use of existing fiber and easily deployable devices that can be integrated into racks alongside traditional telecommunications equipment. This approach enhances the feasibility of the quantum internet becoming a plug-and-play solution in the future. Additionally, the researchers utilized cost-effective photon detectors, which not only reduced the overall cost but also minimized the energy requirements of the network.

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Prem Kumar from Northwestern University emphasizes the practicality of using commercially available equipment for quantum communication protocols, signaling a significant step towards the implementation of quantum networks in real-world scenarios. However, Kumar notes that for full practicality, the network must improve its data transfer speed.

Mehdi Namazi from the quantum communication start-up Qunnect in New York acknowledges the potential benefits of this approach for future networks of quantum computers or sensors. However, he highlights the need for a true quantum repeater to enhance efficiency further.

Overall, the successful exchange of quantum information through existing telecommunication fibers in Germany showcases the progress towards establishing a secure and efficient quantum internet. This development paves the way for future advancements in quantum communication technology and its integration into various applications.

TAGGED:CablesDataexistingInternetQuantumUltrasecure
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