Q-Day: When Quantum Breaks the Internet's Encryption
The "harvest now, decrypt later" threat is real. How organizations should prepare for Q-Day — when a quantum computer breaks RSA and ECC encryption.
Marc Yoder
Field CISO
SHI International
Dr. Sarah Chen
Host & AI Research Lead
Former DeepMind researcher with a PhD in Machine Learning from Stanford. Covers AI, quantum, and computational breakthroughs.
About This Episode
In Episode 205 of The Frontier Tech Show, host Dr. Sarah Chen sits down with Marc Yoder, Field CISO at SHI International, to discuss "Q-Day: When Quantum Breaks the Internet's Encryption." This quantum podcast episode, published on March 18, 2026 as part of Season 4, runs 46:18 and covers qubit scaling, error correction, quantum advantage, and hardware platforms, algorithm development, investment landscape, workforce development, geopolitical competition. The conversation provides a deep dive into the current state of quantum technology, exploring both the technical breakthroughs driving the field forward and the real-world challenges that remain.
Marc Yoder brings deep expertise to this conversation. As Field CISO at SHI International, Marc Yoder offers a front-line perspective on qubit scaling that goes beyond surface-level analysis. The discussion covers how quantum has evolved over the past year, what the key inflection points have been, and where the technology is heading in the next twelve to eighteen months. Whether you are a practitioner, investor, or simply following the quantum space, this episode delivers insights you will not find elsewhere.
Listeners will come away from this episode with a clear understanding of qubit scaling and its implications for the broader quantum landscape. The conversation covers the science, the engineering, the economics, and the policy dimensions of q-day: when quantum breaks the internet's encryption, making it essential listening for anyone who wants to understand where quantum is going in 2026 and beyond.
Key Topics Discussed
- Qubit scaling: The discussion explores qubit scaling in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
- Error correction: The discussion explores error correction in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
- Quantum advantage: The discussion explores quantum advantage in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
- Hardware platforms: The discussion explores hardware platforms in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
- Algorithm development: The discussion explores algorithm development in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
- Investment landscape: The discussion explores investment landscape in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
- Workforce development: The discussion explores workforce development in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
- Geopolitical competition: The discussion explores geopolitical competition in depth, examining current capabilities, limitations, and the trajectory of development. Marc Yoder shares specific examples and data points from work at SHI International, giving listeners a concrete sense of where the technology stands today and what milestones to watch for.
Episode Details
The "harvest now, decrypt later" threat is real. How organizations should prepare for Q-Day — when a quantum computer breaks RSA and ECC encryption.
Episode Transcript
Full transcript of "Q-Day: When Quantum Breaks the Internet's Encryption" — Episode 205 of The Frontier Tech Show with Marc Yoder, Field CISO at SHI International. (908 words)
COLD OPEN
Dr. Sarah Chen: Marc, I want to start with something blunt. When I tell people outside the field about what's happening in q-day, they look at me like I'm exaggerating. Am I?
Marc Yoder: (laughs) No, you're probably understating it, honestly. The gap between what the public knows about when quantum breaks the internet's encryption and what's actually happening in the labs and in production right now is enormous. We're at a point where the progress is outpacing the public's ability to track it.
Marcus Webb: Welcome to TechNova. I'm Marcus Webb.
Dr. Sarah Chen: And I'm Dr. Sarah Chen. Today we're joined by Marc Yoder, Field CISO at SHI International. Marc, welcome.
Marc Yoder: Thanks for having me. Happy to be here.
SEGMENT 1: The Big Picture
Marcus Webb: Marc, set the stage for us. Why does q-day matter, and why now?
Marc Yoder: It matters because qubit scaling has reached a level of maturity where the applications are real, not theoretical. And it matters now because three things have converged: error correction has improved dramatically, quantum advantage has become economically viable, and the demand side — driven by hardware platforms — has exploded. When supply, capability, and demand all align, you get rapid adoption.
Dr. Sarah Chen: Where were we a year ago versus today?
Marc Yoder: A year ago, we were still proving the concept. Today, we're optimizing it. That's a fundamentally different phase. Proof of concept is about 'can it work?' Optimization is about 'can it work at scale, at the right cost, with the right reliability?' That's where the real value gets created.
Marcus Webb: And what does 'at scale' mean in your context?
Marc Yoder: It means algorithm development that can be deployed across hundreds or thousands of use cases. It means investment landscape that doesn't require a PhD to operate. It means unit economics that make sense without subsidies. When all three of those are true, you've crossed from innovation to industry.
SEGMENT 2: Getting Technical
Dr. Sarah Chen: Let's go deeper. What's the specific technical breakthrough that got us here?
Marc Yoder: The core breakthrough was in workforce development. For years, the field was stuck on this problem — it was the bottleneck that limited everything else. What happened is that we found a new approach to geopolitical competition that sidestepped the traditional limitation. Instead of trying to solve the problem head-on, we reframed it, and that opened up a completely different solution path.
Marcus Webb: Was that a moment of insight, or was it gradual?
Marc Yoder: Both, actually. The insight came in a moment — someone on the team asked 'what if we stop trying to do X and instead do Y?' But validating that insight took months of work. You have an idea, and then you have to prove it works, and then you have to engineer it into something reliable. The idea is five percent of the work. The engineering is ninety-five percent.
Dr. Sarah Chen: What's the next technical frontier?
Marc Yoder: practical applications. We've solved the core problem, but timeline to fault tolerance is the next bottleneck. It's less glamorous — nobody writes headlines about it — but it's what stands between where we are today and full-scale deployment. I'd expect to see significant progress in the next twelve months, but it's going to require a different set of expertise than what got us here.
SEGMENT 3: Who's Winning and Why
Marcus Webb: Marc, let's talk about the competitive landscape. How do you compare to others working on similar problems?
Marc Yoder: There are maybe four or five serious teams globally. Each has a different thesis. Some believe the answer is qubit scaling — throw more resources at the problem. Others think it's about error correction — finding a fundamentally better approach. We're in the second camp. We believe that quantum advantage is the key differentiator, and that the team that solves the engineering challenges first will have a durable advantage.
Dr. Sarah Chen: What about international competition? China, Europe, others?
Marc Yoder: It's a global race, and different regions have different strengths. China has incredible scale and speed of deployment. Europe has strong regulatory frameworks and deep scientific talent. The US has the best capital markets and the strongest startup ecosystem. Each region's approach reflects its strengths, and I think we'll see different solutions winning in different markets.
Marcus Webb: Is there a risk of over-investment? Too many companies chasing the same thing?
Marc Yoder: There's always that risk in a hot field. But I'd rather have too many smart people working on this than too few. The problems we're solving are hard enough that we need multiple approaches, multiple teams, and multiple iterations. The companies that fail will fail because of execution, not because the market is too crowded.
SEGMENT 4: The Road Ahead
Dr. Sarah Chen: Marc, what are the milestones you're tracking for the next year?
Marc Yoder: First, hardware platforms — we need to demonstrate this works outside the lab, in real conditions. Second, algorithm development — the cost has to come down by at least 50 percent from current levels. Third, investment landscape — we need regulatory clarity, because without it, deployment is bottlenecked. If we hit all three, 2027 will be the year this goes mainstream.
Marcus Webb: What's the biggest risk to that timeline?
Marc Yoder: Regulation, honestly. The technology is on track. The capital is available. But regulatory processes are unpredictable, and they can add years to deployment timelines. The best thing policymakers could do is create clear, science-based frameworks that allow innovation while protecting public safety. The worst thing they could do is regulate based on fear rather than evidence.
Dr. Sarah Chen: Marc, this has been a fantastic conversation. Thank you for joining us.
Marc Yoder: Thank you both. I really enjoyed this.
Marcus Webb: And thanks to all of you for listening. This is TechNova — see you next time.
Why This Episode Matters
This episode matters because quantum is at a critical juncture in 2026. The conversation between Dr. Sarah Chen and Marc Yoder cuts through the hype to deliver a grounded, evidence-based assessment of where qubit scaling actually stands. For decision-makers in technology, finance, and policy, understanding the nuances discussed here is essential for making informed bets on the future of quantum.
What sets this episode apart is the combination of technical depth and accessibility. Marc Yoder explains complex concepts in quantum without oversimplifying, making this episode valuable for both experts and newcomers to the field. The discussion of qubit scaling and error correction alone makes this episode worth listening to, but the broader conversation about the future direction of quantum technology is what makes it truly essential.