On Quantum Day, Indiana Is Positioned on the Frontier of a True Computing Revolution
As this is published, today is World Quantum Day, a day observed annually on April 14. For those interested, the date was chosen to honor the first three digits of Planck’s constant (4.14 × 10⁻¹⁵ electron-volts per second), the mathematical bedrock of quantum physics itself.
Why is this relevant? What began as a grassroots effort among scientists and educators has grown into a global opportunity that is moving steadily from theory into infrastructure. Accordingly, on Quantum Day 2026 it seems an especially fitting moment to review where quantum computing stands, including Indiana’s place in that emerging revolution.
Theory moving toward reality
When this column first appeared in January 2025 (the year of Quantum Computing), quantum computing was the technology equivalent of a distant rumor: fascinating, plausible, but vague in its timelines and commercial implications.
No more.
In 2026, while the spotlight remains appropriately turned on the current disruption arising from AI, the race to practical quantum computing is heating up across the globe. The business, governance, and societal ramifications of AI deployment certainly deserve careful review and debate today , but we must consider the fact that quantum computing has quietly accelerated its development arc in ways that demand serious attention.
This development holds special significance for companies like Smithville and institutions who manage critical infrastructure.
From curiosity to competition
Back in 2019 when Google’s Sycamore quantum processor first turned heads by completing in 200 seconds a calculation estimated to take 10,000 years on classical hardware, it seemed more like a laboratory stunt than a commercial harbinger. But since then, the field has matured considerably, and the competition has intensified.
Today, IBM announced it is on track to demonstrate verified quantum advantage by the end of 2026 using its new 120-qubit Nighthawk processor, achieving a 10x speedup in error correction one year ahead of schedule. Google’s Willow chip became the first quantum system to achieve “below threshold” error correction, completing calculations in minutes that would take supercomputers billions of years to complete. Microsoft unveiled Majorana 1, the world’s first quantum processor using topological qubits, claiming it could enable practical quantum computers in “years, not decades.
The critical point? These are not incremental steps. They represent fundamentally different architectural approaches to a shared goal: quantum computers capable of solving problems that classical machines simply cannot.
Meanwhile, IBM pursues a parallel path toward fault-tolerant quantum computing by 2029, a milestone that would mark the true commercial threshold for large-scale quantum deployment.
Quantum innovation goes beyond a three-company race. As recently profiled in Network World, DARPA’s Quantum Benchmarking Initiative includes companies pursuing neutral atom qubits, silicon spin qubits, superconducting qubits, trapped ion qubits, and photonic qubits.
No single architecture has claimed technology victory in the field yet, which is precisely why the next three to five years will be so consequential. And in a remarkable recognition of the foundational science behind it all, three scientists received the 2025 Nobel Prize in Physics for their pioneering work on superconducting quantum circuits.
The Quantum Market is already moving
Perhaps the most significant shift since this column’s original publication is that quantum computing has moved from pretty much pure research to early commercial achievements. Investments of real dollars now grows in the global quantum computing market, reaching last year between $1.8 billion and $3.5 billion. The forecasted growth rate appears eye-popping, with projections indicating growth at a compound annual growth rate of 32.7 percent through 2029.
Real enterprises are posting real results. Achievements documented in 2025 by Network World show that HSBC used IBM’s Heron quantum computer to improve bond trading predictions by 34 percent compared to classical computing alone. Ford Otosan used D-Wave’s quantum annealing technology to reduce scheduling times from 30 minutes to less than five.
These are not proofs of concept for the distant future. They are production results happening today.
The commercialization of quantum computing has also accelerated through Quantum-as-a-Service platforms offered by IBM, Microsoft, and others, democratizing access and reducing barriers to entry for organizations exploring quantum applications. Businesses no longer need to invest in hardware to begin learning and experimenting.
On Quantum Day 2026, an important trend should be recognized: the industry on-ramp has arrived.
The National Security Imperative: a warning hiding in plain sight
No updated discussion of quantum computing would be complete without addressing the shadow it casts over cybersecurity. One of quantum computing’s most significant near-term implications? Its forecasted ability to break the encryption protocols that protect nearly every sensitive digital transaction on earth. That includes banking, medical records, government communications, and networks of all sizes and shapes, with defense networks at the forefront.
What’s the current trend? As discussed by experts at the WestGate@Crane Technology Park a year ago, the emerging industry accelerated post-quantum cryptography adoption in 2025, driven by standardized algorithms and rising “harvest-now, decrypt-later” risks, This describes how both good actors and rogue actors collect encrypted data today, intending to decrypt it once a sufficiently powerful quantum computer exists.
Indiana moves from participant to pioneer
As first referenced in this column more than a year ago, Indiana’s Quantum Corridor reached an important first as a public-private partnership built in part with $4 million in READI program funding. Back then it was a notable regional initiative. Today, the Quantum Corridor has emerged as something considerably more consequential.
At the end of March 2026, Quantum Corridor cleared a technology hurdle to become the first interstate quantum-safe commercial communications network in North America. A live demonstration conducted across 21.8 kilometers of live urban fiber between Chicago and Hammond, Indiana showed quantum timing synchronization up to 40 times more accurate than GPS-based alternatives.
That same month, a quantum optimization machine went live at the Digital Crossroad Data Center in Hammond, connected to the Quantum Corridor network, representing the first commercial data center installation of its kind. — with access secured by Toshiba Quantum Key Distribution technology.
Indiana-based Quantum Corridor joined the Chicago Quantum Exchange as a corporate partner and holds a role as a key contributor to building the nation’s first publicly usable, commercial-grade quantum network testbed. What does this mean in realtime? The Bloch Tech Hub, of which Quantum Corridor is a member, is projected to generate $60 billion in economic impact for the region by 2035.
In related developments on the academic front, Purdue University trustees approved a $10 million renovation to transform the Roberts Impact Lab in Hammond into Indiana’s first facility directly linked to the Quantum Corridor, with work scheduled to begin in September 2026.
That investment represents a signal of institutional confidence in Indiana’s quantum trajectory—and in the academic talent pipeline that will carry it forward.
What this means for telecommunications infrastructure
The fiber question is no longer hypothetical. As we noted on Inside Indiana Business a year ago, quantum communications will ultimately demand network infrastructure built to different specifications than today’s standard fiber — extremely high bandwidth, minimal signal loss, and purpose-engineered physical routes that preserve optical and temporal stability.
Building it takes years of planning, engineering, and partnership — which is precisely why telecom companies like Smithville need to actively track these developments closely, even while today’s high-speed fiber networks continue to perform extraordinarily well in serving both urban and rural Indiana.
Here’s a critical consideration: current fiber infrastructure will not be rendered obsolete by quantum computing’s arrival. To the contrary, today’s fiber networks represent the foundation upon which quantum-ready networks will ultimately be built. That is good news for the communities Smithville serves—and it is a reason why the investments being made in high-speed fiber connectivity today carry longer-term strategic value than many may realize.
A moment worth marking—again
On this World Quantum Day in 2026, it is worth pausing to consider what has changed in just a few years.
A technology once confined to academic whiteboards is now producing verifiable commercial outcomes, attracting Nobel recognition, reshaping cybersecurity strategy, and anchoring a regional economic development corridor in the Midwest.
As noted by the Quantum Insider, we may not notice it personally, but quantum technologies are already woven into daily life through semiconductors, lasers, MRI scanners, and GPS systems.
The next generation of applications—quantum computing, quantum communication, quantum sensing—doesn’t represent a different story. It is the same story, told at a larger scale and at a faster pace.
Importantly, Indiana is not watching from the sidelines. The Quantum Corridor, Purdue, Indiana University, NSWC Crane, and companies throughout the state are active participants in shaping what comes next. That participation needs to grow—in workforce development, in university research, in private sector adoption, and in policy engagement.
The countdown to practical quantum computing has grown shorter. Now is still the time to start.
Cullen McCarty is a fifth-generation CEO with Smithville, an Indiana technology company that has been innovating for more than 100 years.
(The original version of this content appeared on Inside Indiana Business. As a respected industry voice, McCarty regularly comments on technology trends and contributes to IIB and other industry media. The content is also available on Smithville’s LinkedIn page.