QKD

Quantum Key Distribution

SDT 1:N QKD

The SDT 1:N QKD is a quantum key distribution device that leverages the no-cloning theorem of single photons to create a secure network between one receiver and up to 64 transmitters. As a Plug & Play solution, it features a robust optical structure designed to maintain exceptional stability even under varying environmental conditions, such as fluctuations in pressure or temperature.

Developed with SDT's proprietary technology, the 1:N QKD incorporates a receiver equipped with multiple lasers and a pair of avalanche photodetectors (APD), enabling cost-effective quantum key distribution to multiple receivers.

Maximum communication distance 80km

Up to 1:64 channels available

Decoy-state BB84 protocol

Plug & Play system

Apparatus and method for stabilizing quantum cryptography system

Patent Number US 15/176428

Method for Forming a Quantum Key Distribution Network and Communication Device Thereof

Patent Number 10-2018-0114277

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SDT 1:N QKD Brochure

Why QKD?

The RSA algorithm, a cornerstone of modern security systems based on prime factorization, is increasingly vulnerable as quantum computers advance, enabling rapid prime factorization. In contrast, Quantum Key Distribution (QKD) leverages the principles of quantum mechanics to provide a key distribution mechanism that remains secure not only against current computational methods but also in the era of quantum computing.

QKD securely generates and distributes cryptographic keys using the no-cloning theorem of single photons in quantum mechanics. These keys are one-time-use, valid for a short duration, and automatically replaced after use. If intercepted, the quantum state collapses, invalidating the key and ensuring eavesdropping is fundamentally impossible.

Built on true randomness, QKD relies on the generation and measurement of quantum states. The SDT 1:N QKD employs a random number generator compliant with KS X ISO/IEC 19790:2015 security standards, creating a secure network rooted in genuine randomness.

The RSA algorithm, widely used in modern security systems based on prime factorization, is facing the threat of advancements in quantum computers that can perform prime factorization at an incredibly fast pace. Quantum Key Distribution (QKD), based on the principles of quantum mechanics, offers an unbreakable key distribution mechanism that remains secure even with the development of quantum computers and current computing methods.

QKD is a technology that generates and securely distributes the cryptographic keys necessary for secure communication, based on the impossibility of duplicating a single photon in quantum mechanics. The generated cryptographic keys are one-time use only and valid for a short period; once used, they are discarded and updated with a new quantum key. If a third party intercepts the cryptographic key, the quantum state collapses, rendering the key invalid and fundamentally preventing eavesdropping.

Quantum key distribution operates based on generating and measuring quantum states with randomness. SDT 1:N QKD uses a random number generator that meets the security requirements of KS X ISO/IEC 19790:2015 to establish a secure network based on true randomness.

The RSA algorithm, widely used in modern security systems based on prime factorization, is currently facing challenges posed by the advancement of quantum computers that can perform prime factorization at a very fast speed. QKD, based on the principles of quantum mechanics, provides a key distribution mechanism that remains unbreakable not only by current computing methods but also by future advancements in quantum computers.

QKD is a technology that generates and securely distributes the cryptographic keys necessary for secure communication, based on the impossibility of replicating single photons in quantum mechanics. The cryptographic keys generated in this way are one-time-use only, valid for a short period, and are discarded after use and updated with a new quantum key. If a third party attempts to intercept the cryptographic key, the quantum state collapses, rendering the cryptographic key invalid and fundamentally preventing eavesdropping.

Quantum key distribution is based on random numbers, with quantum state generation and measurement taking place. The SDT 1:N QKD uses a random number generator that meets the security requirements of KS X ISO/IEC 19790:2015 to form a secure network based on true random numbers.

1:64 Star Topology

The SDT QKD, supporting a 1:64 star topology, delivers a quantum encryption communication network that enables secure communication between administrators at central control headquarters and distributed key facilities.

This technology establishes secure connections between data centers, as well as between classical and quantum computers, paving the way for true quantum-classical hybrid computing.

Furthermore, the 1:N QKD connects a single headquarters to multiple locations, bringing the benefits of public cloud technology to industrial sites previously unable to adopt it. It is also widely applied in major urban communication networks and power grid communications.

1:64 Star Topology supported SDT QKD provides a quantum encryption communication network, allowing administrators in the central control headquarters to securely communicate with dispersed key facilities.

This enables secure connections not only between data centers but also between classical computers and quantum computers, facilitating true quantum-classical hybrid computing.

In addition, 1:N QKD can connect a single headquarters with multiple locations, offering the advantages of public cloud to industrial sites that could not previously adopt it, and is also used in major urban communication networks and power grid communications.

This enables secure connections not only between data centers but also between classical computers and quantum computers, facilitating true quantum-classical hybrid computing.