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A technology that takes us one step closer to the quantum Internet.
A group of researchers from Germany has developed an innovative method of protecting information that can change the future of cybersecurity. Scientists from the Leibniz University of Hanover, the Federal Office of Physics and Technology in Braunschweig and the University of Stuttgart have presented a technology that uses semiconductor quantum dots and quantum key distribution (QD).
The discovery is particularly significant amid growing concerns that quantum computers could compromise modern encryption methods. Traditional algorithms, long considered reliable, are at risk of being rendered powerless by the computing power of the machines of the future.
KRK is a method of securely exchanging encryption keys between two parties. This approach uses the principles of quantum mechanics to generate random keys that are impossible to crack. In the KRK system, individual photons act as carriers of quantum keys. Any attempt to intercept a message introduces errors in the signal, which leads to immediate detection of interference.
The research team, led by Professors Fei Ding, Stefan Kuck and Peter Michler, turned to semiconductor quantum dots as sources of single photons. This approach allowed them to achieve high secure key transfer rates over a distance of 79 kilometers between Hanover and Braunschweig.
Professor Fei Ding explained the research: "We are working with quantum dots, which are tiny structures similar to atoms, but adapted to our needs. For the first time, we used "artificial atoms" in an experiment on quantum communication between two different cities. This facility, known as the "Niedersachsen Quantum Link", connects Hanover and Braunschweig via a fiber-optic line."
In simple words, the principle of quantum communication is based on the unique properties of light, which protect messages from interception. Quantum dot devices generate single photons. Scientists monitor their polarization and send them to Braunschweig for measurement.
In addition to providing secure communication, the technology can be used in the creation of quantum repeaters and distributed quantum sensors. The dots are capable of storing quantum information and emitting photonic cluster states, making them ideal candidates for integration into large-scale quantum communication networks with high throughput.
Professor Ding said enthusiastically: "Until recently, the use of quantum dots in real quantum communication systems seemed like a dream to us. Today, we have not only made this dream a reality, but also opened the way to exciting new experiments and applications that bring us closer to creating a quantum Internet."
Source
A group of researchers from Germany has developed an innovative method of protecting information that can change the future of cybersecurity. Scientists from the Leibniz University of Hanover, the Federal Office of Physics and Technology in Braunschweig and the University of Stuttgart have presented a technology that uses semiconductor quantum dots and quantum key distribution (QD).
The discovery is particularly significant amid growing concerns that quantum computers could compromise modern encryption methods. Traditional algorithms, long considered reliable, are at risk of being rendered powerless by the computing power of the machines of the future.
KRK is a method of securely exchanging encryption keys between two parties. This approach uses the principles of quantum mechanics to generate random keys that are impossible to crack. In the KRK system, individual photons act as carriers of quantum keys. Any attempt to intercept a message introduces errors in the signal, which leads to immediate detection of interference.
The research team, led by Professors Fei Ding, Stefan Kuck and Peter Michler, turned to semiconductor quantum dots as sources of single photons. This approach allowed them to achieve high secure key transfer rates over a distance of 79 kilometers between Hanover and Braunschweig.
Professor Fei Ding explained the research: "We are working with quantum dots, which are tiny structures similar to atoms, but adapted to our needs. For the first time, we used "artificial atoms" in an experiment on quantum communication between two different cities. This facility, known as the "Niedersachsen Quantum Link", connects Hanover and Braunschweig via a fiber-optic line."
In simple words, the principle of quantum communication is based on the unique properties of light, which protect messages from interception. Quantum dot devices generate single photons. Scientists monitor their polarization and send them to Braunschweig for measurement.
In addition to providing secure communication, the technology can be used in the creation of quantum repeaters and distributed quantum sensors. The dots are capable of storing quantum information and emitting photonic cluster states, making them ideal candidates for integration into large-scale quantum communication networks with high throughput.
Professor Ding said enthusiastically: "Until recently, the use of quantum dots in real quantum communication systems seemed like a dream to us. Today, we have not only made this dream a reality, but also opened the way to exciting new experiments and applications that bring us closer to creating a quantum Internet."
Source
