The Post-Quantum World
Hosted by Konstantinos Karagiannis
A bi-weekly podcast for business and tech leaders on the immediate threats and strategic opportunities of quantum computing.
This is a high-level corporate podcast that bypasses abstract theory to focus on the practicalities of the quantum transition. It frames topics like post-quantum cryptography (PQC), algorithmic improvements, and hardware limitations as immediate business concerns, covering issues like quantum technical debt, crypto-agility, and the risk of 'Harvest Now, Decrypt Later' attacks. The show serves as a guide for executives and senior technologists navigating the strategic planning required to become 'quantum-ready'.
“Unlike more academic podcasts, its relentless focus is on near-term business and security implications. The host leverages his consulting background to probe guests—often founders and C-level execs from leading quantum firms—on implementation timelines, resource challenges, and the tangible ROI of adopting new quantum approaches.”
Who hosts this show
The Post-Quantum World is a bi-weekly podcast from the consulting firm Protiviti. Host Konstantinos Karagiannis, Protiviti's Senior Director of Quantum Computing Services, interviews top experts to translate the complex world of quantum computing into actionable business strategy. The show focuses on the tangible impacts, benefits, and threats of quantum technology, helping organizations prepare for the coming shift.
Credentials & credits
- Senior Director, Quantum Computing Services at Protiviti
- Involved in the quantum computing industry since 2012
- Frequent speaker at RSA, Black Hat, and DEF CON conferences
- Named one of the Top 25 Most Influential People in Quantum Security by Techstrong
- Information Security professional since the 1990s
What kind of podcast
When new episodes drop
- 011000x Faster and Cheaper than Classical – with Richard Givhan of Haiqu | Ep. 131Jun 24, 2026 · 43 min
- 02The Race to Save Bitcoin – with Chris Tam of BTQ | Ep. 130Jun 10, 2026 · 40 min
- 03
- 04Slashing the Time to Quantum Advantage – with Toby Cubitt of Phasecraft | Ep. 128May 13, 2026 · 43 min
- 05Quantum Vibe Coding – with Vincent van Wingerden of Classiq | Ep. 127Apr 28, 2026 · 33 min
- 06
Notable episodes
- 01NVIDIA Architect Warns We Might Need to Rip and Replace Hardware for PQC – with TCG | Ep. 129
This episode provides a stark, practical warning about 'quantum technical debt,' arguing that many existing hardware systems cannot be upgraded to post-quantum standards via software and will require physical replacement.
- 02The Race to Save Bitcoin – with Chris Tam of BTQ | Ep. 130
A compelling look at the specific, urgent threat quantum computing poses to cryptocurrencies, explaining why wallets are more vulnerable than mining and the immense logistical challenge of a network-wide security upgrade.
- 031000x Faster and Cheaper than Classical – with Richard Givhan of Haiqu | Ep. 131
This episode effectively captures the debate between waiting for perfect fault-tolerant hardware versus extracting value now with advanced software, highlighting a claimed 1000x performance improvement on current-gen machines.
What you'll be asked on this show
The show follows a one-on-one interview format, with host Konstantinos Karagiannis asking informed, specific questions that challenge guests on technical claims and business impact. Episodes often begin with a dramatic cold open that frames the central problem, such as the quantum threat to Bitcoin. Karagiannis consistently signs off with the phrase, "Be kind and stay quantum curious."
Questions Konstantinos Karagiannis keeps coming back to
- “Can you provide details on the benchmark claim of...?”
- “How do you handle challenges like [e.g., memory bloat, increased latency] in your approach?”
- “How does this technology mitigate the 'Harvest Now, Decrypt Later' threat?”
- “What were the primary technical hurdles you faced in fitting post-quantum cryptography onto...?”
- “How does your solution integrate with and adapt to new cloud backends and processors as they become available?”
- “What are your company's plans to incorporate this new specification?”
- “What do you think will signal the true arrival of practical commercial quantum advantage?”
- “How does this help an organization deal with its quantum technical debt?”
Signature segments
- · Sign-off: "Be kind and stay quantum curious."
- · Dramatic, problem-focused cold opens
Topics covered repeatedly
Who gets booked here
Guests are typically C-suite executives, founders, and principal architects from quantum computing startups, major hardware manufacturers, and specialized security firms. They are deep technical experts capable of discussing the business and strategic implications of their work.
- Richard Givhan, CEO of Haiquon 1000x Faster and Cheaper than Classical – with Richard Givhan of Haiqu | Ep. 131
- Chris Tam, President and Head of Innovation at BTQon The Race to Save Bitcoin – with Chris Tam of BTQ | Ep. 130
- Thorsten Stremlow, Systems Principal Architect at NVIDIAon NVIDIA Architect Warns We Might Need to Rip and Replace Hardware for PQC – with TCG | Ep. 129
- Toby Cubitt, Co-founder and CTO of Phasecrafton Slashing the Time to Quantum Advantage – with Toby Cubitt of Phasecraft | Ep. 128
- Vincent van Wingerden, Director of Strategic Partnerships at Classiqon Quantum Vibe Coding – with Vincent van Wingerden of Classiq | Ep. 127
Where to find this show
Audience & reach
The podcast is produced by the global consulting firm Protiviti, where the host leads the quantum computing practice. It functions as a content marketing platform to demonstrate Protiviti's expertise and generate leads for its quantum readiness assessment and consulting services.
Subscriber and view counts are pulled live from YouTube and re-verified on a 30-day cycle. Listener estimates for the RSS feed aren't published here unless they're host-verified.
Pitch Konstantinos Karagiannis
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People also ask
- What is the host's name?
- The host is Konstantinos Karagiannis.
- Is The Post-Quantum World podcast still active?
- Yes, it is a bi-weekly podcast that releases new episodes regularly.
- What is the format of the show?
- It is a one-on-one interview show where the host speaks with experts from the quantum computing industry and related fields.
- Who is the podcast for?
- It is aimed at business and technology leaders who need to understand the strategic impact of quantum computing on their organizations.
- Who makes the podcast?
- The podcast is produced by Protiviti, a global business consulting firm.
- Where can I listen to the podcast?
- The podcast is available on Protiviti's website, YouTube, and major podcast platforms like Apple Podcasts.
Built from the show's public RSS feed, YouTube, the host's own websites, and the cited sources below. Computed and AI-extracted fields are labelled. Facts only — no private info, no fabrication, no transcripts republished.
Sources & how this page was built
This page is AI-assisted, grounded in the public sources cited below, and host-verifiable. We publish facts only; we do not republish transcripts. If anything here is wrong, the host can claim and correct the page above.Model: gemini-2.5-pro · high confidence
- [01]Konstantinos Karagiannis | Protiviti USprotiviti.com
- [02]The Post-Quantum World Podcast Series | Protiviti USprotiviti.com
- [03]The Post-Quantum World - Apple Podcastspodcasts.apple.com
- [04]Quantum Computing Services | Protiviti USprotiviti.com
- [05]The Post-Quantum World: A New Protiviti Podcast Seriesblog.protiviti.com
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