QKD

Why FSO Is the Natural Platform for Satellite QKD

Comparing RF, fiber, and FSO for QKD; why the trusted-relay problem limits fiber-based QKD; and 5 reasons satellite FSO solves it decisively.

Truong Tuan Nghia
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PQC vs. QKD: Two Lines of Defense Against Quantum Computers

Comparing Post-Quantum Cryptography and Quantum Key Distribution: which layer each operates at, what security they rely on, and why they complement rather than compete with each …

Truong Tuan Nghia
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From Qubit to Secret Key Rate: The Foundational Concepts of Quantum You Need

A clear explanation of 7 foundational concepts in quantum computing and communication: qubit, superposition, entanglement, no-cloning, QKD, QBER, SKR.

Truong Tuan Nghia
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The Quantum Applications Landscape: 5 Groups, and Where Does QKD Fit?

A taxonomy of 5 groups of quantum technology applications, with representative software and hardware, and why QKD sits exactly at the intersection of Quantum Security and Quantum …

Truong Tuan Nghia
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Quantum Communication for Satellite Technology: From QKD to the Tropical Weather Problem

A technical overview of satellite Quantum Key Distribution (QKD) over free-space optical (FSO) channels, and the tropical ASEAN weather problem I'm researching at PTIT.

Truong Tuan Nghia
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Seminar: Quantum Internet in the Sky (Vision, Challenges, Solutions)

A seminar presentation analyzing the paper 'Quantum Internet in the Sky' (Trinh & Sugiura, IEEE Communications Magazine, 2024) for a graduate course at SoICT, Hanoi University of …