The Post-Quantum World

The Post-Quantum World

Follow The Post-Quantum World, where Protiviti and our guests explore quantum computing and its business impacts, benefits and threats. Quantum computing capabilities are exploding, causing disruption and opportunities, but many technology and business leaders still don’t understand the impact quantum will have on their business. Protiviti is helping organizations get post-quantum ready. In our bi-weekly podcast series, The Post-Quantum World, Protiviti Associate Director and host Konstantinos Karagiannis is joined by quantum computing experts to discuss hot topics in quantum computing, including the business impact, benefits and threats of this exciting new capability. Visit www.protiviti.com/postquantum to learn more about how Protiviti is helping organizations get post-quantum ready. For questions or additional information, contact Konstantinos Karagiannis: konstantinos.karagiannis@protiviti.com.

Episodes

December 10, 2025 29 mins
Traffic congestion isn't just a daily annoyance; it’s a multi-billion dollar drain on the global economy. In this episode, we explore a concrete, real-world application of quantum computing that aims to solve this problem today. Tal David, Co-founder and CEO of Quantum Art, joins host Konstantinos Karagiannis to discuss the company’s major new partnership with Ayalon Highways in Israel. Tal breaks down how they are moving beyond th...
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We cover post-quantum cryptography (PQC) regularly on this show, focusing on the new math-based ciphers that will secure the Internet as quantum computing becomes more powerful. But what about physics-based encryption or quantum key distribution (QKD)? Is that still a thing? We examine how exploiting the laws of quantum physics can securely exchange encryption keys over a fiber and explore the benefits of the newer continuous-varia...
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The word “foundry” might make you think of large machines pouring metal into molds, but Argonne National Labs has a Quantum Foundry that implants individual atoms, like silicon, into materials such as diamond. The resulting spin qubits are optically active and can use photons to communicate. We can expect spin qubits to help interconnect systems, which could help us achieve distributed quantum computing, but they also could be used...
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How are recent quantum computing breakthroughs reshaping business, competition, and society itself? What global challenges might quantum and AI either help with or introduce? We’re trying something a little different and asking a futurist and bestselling author of The Quantum Economy to weigh in on how our increasing qubit counts might all play out in a few years. Join host Konstantinos Karagiannis for a wide-ranging, philosophical...
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You’ve likely heard of Pareto’s Principle or the 80/20 rule. Is there a way to achieve most of the benefits of crypto-agility with minimal effort? Palo Alto Networks has undoubtedly made its mark with firewalls and security detection and response offerings. We learn how they can also provide a rapid head start to PQC migration, covering everything from cryptographic inventory to creating wrappers for legacy app communications that ...
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Can you put a quantum computer in a satellite, car, or even laptop? It’s possible with diamond-based quantum technologies that work at room temperature. Nitrogen-vacancy (NV) center qubits challenge the notion that quantum computing is confined to massive data centers. Such mass-deployable quantum computers and sensors can be used in medical diagnostics, satellite imaging, and anywhere local inference is useful. Join host Konstanti...
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For the first time, Shor’s Algorithm is running on logical qubits! The team at Infleqtion used their Sqale neutral atom processor to accomplish the feat. While the setup only uses six logical qubits, and we’re still in the range of factoring 15 or 21, this is both a proof of concept and a proof of the need for post-quantum cryptography (PQC). We discuss the aggressive 2.5:1 physical-to-logical ratio of Sqale, which could lead to hu...
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 Imagine a world where quantum computers seamlessly share entangled particles across data centers, solving problems beyond the reach of classical systems. This may be possible soon thanks to a groundbreaking quantum networking entanglement chip capable of generating 200 million entangled photon pairs per second at room temperature. Cisco is redefining networking again, doing everything from detecting eavesdroppers on classical netw...
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DigiCert is widely recognized for its expertise in PKI and as a TLS certificate authority. As you can imagine, they have a significant perspective on the quantum computing threat to encryption and the migration to post-quantum cryptography (PQC). We cover everything from the challenges of upgrading IoT devices to ML-DSA signature sizes, as well as the new DigiCert One platform the company offers to help manage the migration process...
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IonQ is poised to redefine the quantum computing landscape, projecting a staggering 80,000 logical qubits by 2030—potentially unlocking the power to crack encryption. NIST has us on a timeline to upgrade to post-quantum cryptography (PQC) by 2035, so this 5-year gap may spell doom for cybersecurity. Of course, these machines will also revolutionize industries from finance to drug discovery to AI. How is IonQ boosting their roadmap ...
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DEF CON 33 approaches, bringing with it the fourth year of Quantum Village. Nothing like getting hands-on with quantum computing and sensing technology at the world’s leading hacking conference. To that end, this episode explores the open-source quantum sensing device and software that our guests Mark Carney and Victoria Kumaran are presenting in Vegas. And yes, for the third year in a row, host Konstantinos Karagiannis will be spe...
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How much performance can you squeeze out of quantum computing by improving the stack? A lot happens in code before classical bits touch qubits. One company’s hardware-specific algorithms, delivered via a cloud platform, supercharge real-world applications like protein folding and AI-enhanced machine learning. From outperforming classical tools like Gurobi on IBM’s 156-qubit processor to slashing circuit depths by up to 1,000x, Kipu...
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When NIST released the first post-quantum cryptography standards in August 2024, it set off a domino effect that will hopefully result in protecting the world from the quantum computing threat. Now that we’re beginning to migrate and trust our data to lattice-based cryptography, it’s a good time to examine how ML-KEM works and get some hints about how to implement it well. And who better to ask than one of the coauthors of the PQC ...
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Quantum computing and sensing are emerging markets, but they are already worth well over $1 billion. How is growth looking? Some trends may surprise you, including a shift to on-prem quantum computers. Has AI really stolen quantum’s thunder, or is it about to synergistically help our industry and qubit counts grow? Join host Konstantinos Karagiannis for a wide-ranging chat with Celia Merzbacher, where they discuss solid global rese...
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Over 1,000 GPS denial attacks happen around the world … every day! If GPS fails, planes, ships and drones could be stranded in a fog of uncertainty or forced into a dangerous situation. Can the unprecedented precision of quantum sensing help? We dive into cutting-edge innovations at Q-CTRL, exploring how AI-powered quantum navigation is revolutionizing aerospace and defense, outsmarting GPS denial attacks, and unlocking a future wh...
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Post-quantum cryptography is rapidly moving from the realm of NIST standards to running in production. The threat of quantum computing advances and coming regulations are driving this acceleration. One major component on the PQC migration plan for companies is VPN. In this episode we look at the Ambit corporate VPN client, which uses a standardized NIST PQC cipher: ML-KEM. Did you know there are potential gotchas with trying hybrid...
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Quantum computing is a fast-moving field, and not just when photons are involved. Join host Konstantinos Karagiannis for a wide-ranging chat with Anastasia Marchenkova, where they cover recent developments and potential future outcomes. Topics include: chip hype, logical qubits, imminent practical business use cases, quantum random numbers, the implications of AI in quantum coding, investing, and networking or interconnect. Get cau...
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As the quantum computing industry continues to evolve, it’s only natural that quantum incubators start appearing. How do investors like this choose what technologies to back in early stages? We look at the choices being made by one such investor, Spectral Capital. Join host Konstantinos Karagiannis for a wide-ranging chat with Sean Brehm on graphene quantum dots, a quantum blockchain, and algorithms with wide use cases.  
For more i...
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What better way to celebrate four years and 100 episodes of The Post-Quantum World than to talk about an achievement we’ve all been waiting for. If you’ve been watching quantum news feeds, you might have heard of the D-Wave supremacy paper published in Science. Using an Advantage 2 system, D-Wave has performed a useful task for materials science faster and with less power consumption than a classical supercomputer. Researchers have...
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Migrating to post-quantum cryptography across an organization will take time. But while you are replacing every cipher to defend against the threat side of quantum computing, you may also want to add systems that bring new functionality and come with PQC out of the gate. Imagine a mobile messaging app like WhatsApp, but with NIST-approved ML-KEM under the hood and enterprise-grade controls. From hospitals dodging ransomware to fina...
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