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FROM THE EDITOR.

Leave it to Google to make your week interesting.

I know that was last week’s intro. But, seriously, why not just keep this greeting for this week, too? For the past two weeks, the company has made quantum more and more interesting.

And maybe a little scary.

Essentially, Google — and a few other research teams — reported this week on dramatic advances in controlling quantum errors to such an extent that quantum computers could disrupt the cryptographic schemes that keep things, such as cryptocurrency and financial accounts, safe.

Although some reports indicate that the disruptive power of quantum will be unleashed imminently, the message of the researchers was that quantum computers do not pose an imminent threat, but, rather the advances are happening faster and the timeline is shrinking.

The safety window is starting to close, in other words.

That’s important because creating quantum-resistant cryptographic systems to protect these sprawling industries and enterprises aren’t over-night jobs. They require time and effort.

Ultimately, we should thank these researchers not just for the work they’re doing in creating usable quantum computers — because the real-world potential of quantum systems is an underlying message of the work — but also for giving us a heads up.

There’s no need to panic, but there’s a real need to avoid procrastination and tamp down the knee-jerk quantum cynicism.

You can read more about these advances below.

Thanks for reading — and enjoy your weekend!

— Matt, Chief Content Officer at The Quantum Insider

INSIDER BRIEF. 

• Google Shortens Timeline for Quantum-Safe Encryption Transition

• John Martinis, Nobel Prize–Winning Physicist, Joins White House Science And Technology Panel

• Cisco and Atom Computing Partner on Quantum Networking for Scalable Computing

• Quantum-Safe Cryptography: Companies and Players Across the Landscape [2026]

• IBM, Academic Partners Use Quantum Computer to Reproduce Key Material Properties, Testing Early Scientific Usefulness

• Washington Begins to Treat Quantum Technology as a Strategic Priority

• Study Shows Quantum Sensors Can Be Actively Moved Inside Cells For Real-Time Data

• ANELLO and Q-CTRL Partner on GPS-Independent Navigation for UAVs

• Fujitsu, The University of Osaka Develop New Technologies For Chemical Material Energy Calculations on Early Quantum Devices

The Noteworthy & Nuanced

A joint team from Cleveland Clinic and IBM demonstrated a hybrid quantum-classical workflow to model the electronic structure of the 303-atom Trp-cage protein using IBM’s Heron r2 processor. The approach combines wave function-based embedding to break the protein into manageable clusters with quantum sampling techniques to solve complex interactions. This quantum-centric supercomputing method overcomes limits of classical simulation and could scale to larger biomolecules, supporting drug discovery and advanced molecular research.

Atom Computing and Cisco have signed an agreement to explore distributed quantum computing by linking neutral-atom quantum systems through quantum networks. The collaboration will integrate Atom’s hardware with Cisco’s networking stack, including compilers and protocols, to tackle challenges such as interconnects, transduction, and distributed workload execution. The effort aims to enable scalable architectures by connecting multiple quantum processors into unified, networked systems.

QpiAI has developed a hardware-based quantum error correction decoder that significantly reduces latency in superconducting systems. Using a union-find algorithm on its 64-qubit Kaveri processor, the platform cuts correction time from tens of microseconds to about 1.5 microseconds. This enables real-time error correction within qubit coherence limits, a key requirement for scalable fault-tolerant quantum computing, and marks progress toward practical, high-performance quantum machines. — Alan Kanapin, Analyst at The Quantum Insider

The Research Rundown

Check out this week’s handpicked quantum research. These are studies headed for real-world impact: improving accuracy, reducing latency, using fewer resources, or solving problems that classical methods struggle with. These are early developments, but they hint at where quantum might earn its keep.

• Researchers from North Carolina State University demonstrate a hybrid quantum–classical method using VQE and quantum equation-of-motion techniques to predict electronic circular dichroism spectra of clinically relevant chiral drugs.

• Researchers from Riphah International University developed a hybrid quantum–classical neural network for crop disease classification, combining convolutional layers with a small quantum circuit to process image features.

• Researchers from KIIT University introduce a hybrid quantum–classical framework for Parkinson’s disease prediction that encodes speech, gait, and EEG features into variational quantum circuits before classification.
  
  — Cierra Choucair, Journalist & Analyst at The Quantum Insider

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As part of the Year of Quantum Security, a live panel on April 21, 2026, co-hosted with Electric Power Research Institute, will examine how quantum technologies are reshaping the security landscape for critical infrastructure. The session will focus on the energy sector, exploring emerging risks, practical approaches to quantum-resilient systems, and insights from EPRI’s Cyber Quantum Challenge. The discussion reflects a broader shift from awareness to implementation as organizations begin preparing for quantum-era threats.

INSIDER SPOTLIGHT: Google Suggests Quantum Attacks on Cryptocurrency Encryption May Require Fewer Resources

➡️ Google Quantum AI reports that improved quantum algorithms could reduce the resources needed to break widely used cryptographic systems, including those underpinning cryptocurrencies.

➡️ The team estimates that elliptic curve cryptography could be compromised with fewer than 1,200 logical qubits — an order-of-magnitude reduction from prior estimates.

➡️ The work combines optimized implementations of Shor’s algorithm with updated assumptions about error correction and hardware performance.

➡️ While large-scale quantum computers capable of this do not yet exist, the findings suggest the timeline for cryptographically relevant systems may be shorter than previously assumed.

Analyst Commentary

The question that is haunting researchers now is no longer whether quantum computers can break today’s cryptography.

It’s how much machine they actually need to do it.

The latest results from Google Quantum AI don’t introduce a new attack. The underlying mathematics — specifically the ability of Shor’s algorithm to solve the elliptic curve discrete logarithm problem — has been understood for decades.

The team reports, however, that the cost of execution is decreasing as scientists work on improvements in how quantum circuits are compiled and optimized. In this case, the advance could reduce the required scale to fewer than 1,200 logical qubits, with total operations in the tens of millions. Under standard assumptions, that translates to fewer than 500,000 physical qubits. Now, perhaps we should bold this: it is still far beyond today’s systems, but materially closer than earlier estimates.

Quantum risk has often been framed as a distant threshold — a line somewhere far beyond current hardware. What this work suggests is that the line may be moving toward us from two directions: hardware is improving, and the algorithms themselves are getting more efficient.

But it’s important to be precise about what this does — and does not — mean. In other words, let’s level-set.

There is no quantum computer today capable of executing this attack. Building a system with hundreds of thousands of error-corrected qubits remains a major engineering challenge, involving advances in materials, control systems and large-scale error correction.

Even if those machines emerge, not all systems are equally exposed.

The study focuses on elliptic curve cryptography, which underpins digital signatures across cryptocurrencies and much of the internet. That creates a clear vulnerability in principle. But other components — such as proof-of-work mechanisms — are not directly affected by the same class of quantum algorithms.

And the attack models themselves vary.

Fast quantum systems could, in theory, enable “on-spend” attacks — intercepting transactions in real time. Slower systems are more likely to first enable “at-rest” attacks, targeting wallets with exposed public keys over longer timeframes.

That distinction matters for how risk unfolds.

This is less a sudden break than a staged exposure.

There is also a structural constraint that often gets overlooked: migration.

Transitioning to post-quantum cryptography is not simply a software patch. It requires coordination across decentralized networks, protocol updates, and trade-offs in performance. Some assets — particularly dormant wallets with exposed keys — may not be upgradeable at all, creating long-term residual risk.

So what should people be watching next?

First, logical qubit progress, not raw qubit counts. The gap between physical and error-corrected qubits remains the defining bottleneck.

Second, algorithmic efficiency gains. This paper is part of a broader pattern — incremental improvements that steadily lower the bar for useful quantum computation.

Third, real-world migration signals. The earliest meaningful response to this risk will not be a quantum attack — it will be blockchain ecosystems and internet infrastructure beginning to adopt post-quantum standards.

At the risk of oversimplifying, the threat is not immediate — but it is becoming more concrete.

And in quantum, the most important shifts rarely come from a single breakthrough.

They come from the steady compression of what once looked far away.

DATA SPOTLIGHT.

PacketLight Networks and NEC demonstrated quantum key distribution over a 400G dense wavelength division multiplexing (DWDM) network using a dual-fiber setup. They integrated NEC’s QKD system with PacketLight’s PL-4000M 600G Muxponder, achieving 100% data throughput and low latency, verified via a 100GbE tester. The QKD ran over a dedicated parallel fiber, maintaining quantum signal integrity. The result: a cost-effective, scalable quantum-safe model with zero performance tradeoffs on existing high-capacity infrastructure.

INDUSTRY HIGHLIGHTS.

🪨 IQM secured €50 million in financing from BlackRock to support R&D, market expansion, and its planned public listing.

💎 QuantumDiamonds GmbH appointed Peter Lemmens as Managing Director Asia to support expansion into key semiconductor markets, including a new regional hub in Taiwan .

🔗 Toshiba and LQUOM are collaborating on research into long-distance quantum key distribution using quantum repeaters. The project is designed to address scalability and performance challenges to support future quantum communication networks and the quantum internet.

🚀 QuantX Labs launched an optical frequency comb into orbit to validate a key component of its space-based optical atomic clock system.

💰️ memQ raised $10 million in a Series A round to advance its quantum networking platform, which enables different quantum systems to connect over optical telecom links for distributed computing.

✨ Oratomic launched with research suggesting utility-scale quantum computers could be built with ~10,000 atomic qubits, significantly lowering prior resource estimates and accelerating timelines.

🛰️ SEALSQ expanded its Quantum Fund to $200 million to invest across the quantum technology stack and build sovereign, quantum-secure infrastructure. The strategy includes developing an end-to-end “root-to-qubit” ecosystem and a satellite-based Quantum Spatial Orbital Cloud for secure global communications.

🦋 Monarch Quantum raised $55 million to scale production of its photonic control systems, and has already secured over $60 million in contracts with major players.

🐈‍⬛ Alice & Bob received $3.9 million from ARPA-E to develop fault-tolerant quantum algorithms for designing rare-earth-free magnets, targeting a 10,000× speed-up over classical simulations.

🤝 QuSecure is collaborating with NIST National Cybersecurity Center of Excellence to support enterprise migration to post-quantum cryptography by identifying vulnerable systems and developing transition strategies.

📡 The UK-led SPOQC CubeSat mission has launched to test space-based quantum communications, transmitting quantum signals between satellite and ground to advance secure global networks.

🇺🇸 EPB joined the Southeastern Quantum Collaborative, a regional initiative led by University of Alabama in Huntsville, to advance quantum workforce development and innovation across the Southeast.

🖥️ Rigetti Computing sold a 9-qubit Novera QPU to the University of Saskatchewan, establishing its first on-site quantum system for research and education.

🇷🇴 Vegacomp Consulting and QURECA partnered to expand quantum education and training in Romania through courses, programs, and learning platforms for students and organizations.

🌐 Postquant Labs launched a public testnet for Quip.Network, a quantum-classical blockchain platform developed with D-Wave, enabling 13,000+ participants to experiment with optimization-based mining using quantum and classical systems.

🌟 QuiX Quantum demonstrated “below-threshold” error mitigation on a photonic quantum computer, achieving a net reduction in errors while maintaining system performance.

🕰️ Infleqtion, with Safran Electronics & Defense, launched a quantum-enabled timing system combining its Tiqker™ optical clock with existing synchronization platforms, achieving picosecond-level accuracy in real-world tests.

💵 CavilinQ raised $8.8 million in seed funding to develop photonic interconnects that link quantum processors into scalable, distributed systems. The funding will support early demonstrations, lab buildout, and team growth.

💻️ QuEra Computing open-sourced Tsim, a GPU-accelerated simulator that enables fast, large-scale simulation of non-Clifford (T-gate) quantum circuits—reaching ~600 ns per shot for 85-qubit systems.

💴 SpinQ Technology raised ~¥600 million ($83M) in a Series C+ round—bringing its recent total to nearly ¥1 billion—to advance high-qubit superconducting chips and scale hardware production.

EVENTS.

April 6-8 -- International Conference on Quantum Communications, Networking, and Computing (QCNC 2026) -- Taking place in Kobe, Japan, this IEEE-hosted conference covers advances in quantum communications, networking, computing, cryptography, and related systems, featuring research presentations and industry discussions across key tracks in the field.

April 9 -- The Vanderbilt Quantum Forum will be held at the Grand Hyatt Nashville in Nashville, Tennessee, co-hosted by Quantum Coast Capital and presented by The Quantum Insider.

April 9-11 -- TQCEBT 2026 -- Hosted at CHRIST University’s Pune Lavasa Campus in India, this interdisciplinary event explores quantum computing advancements alongside emerging business technology applications, bringing together researchers, practitioners, and business leaders.

Apr 22-23 -- Mathematics & Physics Frontiers 2026 in Frankfurt, Germany is an international forum uniting mathematicians, physicists, engineers, data scientists, and technology innovators from across the globe to explore groundbreaking advances at the intersection of theory and application.

April 27-30 -- The Quantum Matter International Conference & Expo (QUANTUMatter2026) will take place at the Barceló Sants Hotel in Barcelona.

June 4-5 -- Q2B Tokyo 2026 will be held exclusively in-person and presented in Japanese and English, with real-time interpretation.

June 16 -- France Quantum -- the premier event showcasing the French Quantum ecosystem to the world.

June 22-24 -- IQT Nordics: Oslo, Norway

June 24-26 -- Quantum. Tech World: Boston, Mass

June 25-26 -- Quantum.Tech World -- Empowering Quantum, AI & HPC at Enterprise -- Scale, co-located with Quantum.Tech World will be held at Encore Boston Harbor in Boston, United States.

June 25-26 -- Quantum.Tech World -- Empowering Quantum, AI & HPC at Enterprise – Scale, co-located with Quantum.Tech World will be held at Encore Boston Harbor in Boston, United States.

July 1-3 – The 2026 IEEE International Conference on Quantum Control, Computing, and Learning (IEEE qCCL 2026) will take place from Wednesday to Friday, July 1-3, 2026