Marin’s Q-Day Prediction Countdown:

Here is my personal Q-Day prediction. For an understanding of the factors I am considering and recent events that are influencing this prediction, please see Marin’s Q-Day Prediction page.

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    Mitigating Quantum Threats Beyond PQC

    The article explores limitations of PQC and explores alternative and complementary approaches to mitigate quantum risks. It provides technical analysis of each strategy, real-world examples of their deployment, and strategic recommendations for decision-makers. The goal is to illuminate why a diversified cryptographic defense – beyond just rolling out new algorithms ... Read More

    Introduction to Crypto-Agility

    As we edge closer to the Q-Day—the anticipated moment when quantum computers will be capable of breaking traditional cryptographic systems—the need for crypto-agility becomes increasingly critical. Crypto-agility is the capability of an organization to swiftly and efficiently transition between different cryptographic algorithms and protocols in response to emerging threats and ... Read More

    Post-Quantum Cryptography (PQC) Introduction

    Post-Quantum Cryptography (PQC) refers to cryptographic algorithms (primarily public-key algorithms) designed to be secure against an attack by a future quantum computer. The motivation for PQC is the threat that large-scale quantum computers pose to current cryptographic systems. Today’s widely used public-key schemes – RSA, Diffie-Hellman, and elliptic-curve cryptography – ... Read More

    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 ... Read More

    Quantum Entanglement: The “Spooky” Glue Uniting Qubits and Beyond

    From enabling quantum supercomputers to securing communications and teleporting quantum states, entanglement is the thread weaving through all of quantum technology. What once struck Einstein as a paradox is today routinely observed and harnessed in labs – the “spooky action” has become a practical tool. We have learned that entanglement ... Read More

    Transmon Qubits 101

    Transmon qubits are a type of superconducting qubit designed to mitigate charge noise by shunting a Josephson junction with a large capacitor. In other words, a transmon is a superconducting charge qubit that has reduced sensitivity to charge fluctuations​. The device consists of a Josephson junction (a nonlinear superconducting element) ... Read More

    Dos & Don’ts of Crypto Inventories for Quantum Readiness

    Relying on asset owners, developers or IT personnel to identify and report in interviews or survey responses every instance of cryptographic usage is not just impractical; it simply does not work ... Read More

    Marin Ivezic

    Marin Ivezic I am the Founder of Applied Quantum, a research-driven professional services firm dedicated to helping organizations unlock the transformative power of quantum technologies. Alongside leading its specialized service, Secure Quantum—focused on quantum resilience and post-quantum cryptography—I also invest in cutting-edge quantum ventures through Quantum.Partners. Currently, I’m completing a PhD in Quantum Computing and authoring an upcoming book “Practical Quantum Resistance,”while regularly sharing news and insights on quantum computing and quantum security at PostQuantum.com. More about me.

    Post-Quantum Cryptography (PQC) and Post-Quantum Security Articles

    Quantum Computing Articles

    Quantum Computing Modalities / Architectures / Paradigms

    Quantum Networks Articles

    Quantum AI Articles