Blog

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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Why We Need Quantum-Safe Security Today, Not in 2030

The timeline from Feynman to Shor to Google Sycamore, and why the 'harvest now, decrypt later' strategy means the quantum threat is already here.

Truong Tuan Nghia
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FSO and Non-Terrestrial Networks: The Physical Foundation for a Quantum Internet

What Free-Space Optics is, how the LEO/HAPS/LAPS platform layers differ, and why the SWaP-C constraint shapes every airborne quantum system design.

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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Hello! Welcome to My Blog

First post — introducing the blog and what I'll be sharing here.

Truong Tuan Nghia
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Pursuing Three Master's Programs Simultaneously

Why I decided to pursue 3 Master's programs in parallel, and how I manage my time.

Truong Tuan Nghia
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Presenting Research at Gama Days 2024

My experience presenting my first paper at the international Gama Days 2024 conference.

Truong Tuan Nghia
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