All Quantum Networks Posts
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Quantum Networks
Quantum Teleportation
Quantum teleportation is a process by which the state of a quantum system (a qubit) can be transmitted from one location to another without physically sending the particle itself. Quantum teleportation has become a foundational method in quantum communication, envisioned as a building block for quantum networks and even quantum computing. In essence, it provides a way to transfer quantum information securely and instantaneously (in…
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Industry & Ecosystem News
Record-Breaking Quantum Transmission Via Micius
A team of Chinese physicists has achieved a landmark advance in quantum communication, successfully teleporting quantum states between two ground stations 1,200 kilometers apart via Micius satellite. The experiment, led by Pan Jianwei of the University of Science and Technology of China, marks the longest-distance quantum teleportation ever demonstrated, shattering previous records that were limited to tens or hundreds of kilometers. The researchers report that six…
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Post-Quantum, PQC, Quantum Security
Next-Generation QKD Protocols: A Cybersecurity Perspective
Traditional QKD implementations have demonstrated provably secure key exchange, but they come with practical limitations. To address these limitations, researchers have developed next-generation QKD protocols. These advanced protocols improve security by reducing trust assumptions and mitigating device vulnerabilities, and they enhance performance (key rate, distance) through novel techniques. The article includes a high-level overview of the most notable next-gen QKD protocols.
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Post-Quantum, PQC, Quantum Security
Entanglement-Based QKD Protocols: E91 and BBM92
While prepare-and-measure QKD currently leads the market due to simplicity and higher key rates, entanglement-based QKD protocols like E91 and BBM92 are at the heart of next-generation quantum communications. Ongoing improvements in photonic technology are steadily closing the gap in performance. The additional security guarantees (e.g., tolerance of untrusted devices) and network capabilities (multi-user, untrusted relay) provided by entanglement make it a very attractive approach…
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Post-Quantum, PQC, Quantum Security
Quantum Key Distribution (QKD) and the BB84 Protocol
Quantum Key Distribution (QKD) represents a radical advancement in secure communication, utilizing principles from quantum mechanics to distribute cryptographic keys with guaranteed security.Unlike classical encryption, whose security often relies on the computational difficulty of certain mathematical problems, QKD's security is based on the laws of physics, which are, as far as we know, unbreakable.
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Policy, Standards & Regulation News
Inside ITU’s New Quantum Key Standard (Y.3800)
In late 2019, the International Telecommunication Union (ITU) quietly reached a milestone in cybersecurity: it approved a new standard that could redefine how we secure data in the coming quantum era. The standard, known as ITU-T Recommendation Y.3800, is an “Overview on networks supporting Quantum Key Distribution” - essentially a blueprint for building networks that use the strange laws of quantum physics to protect encryption…
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