Welcome to issue #22 of This Week in Quantum — a roundup of the most important developments in quantum computing from August 3-9, 2026.
Earnings season put hard numbers behind the sector’s momentum this week, with IonQ posting its strongest quarter yet. On the hardware side, progress came from multiple directions at once — superconducting gate fidelity, silicon-based post-quantum chips, and even room-temperature diamond processors — while the security world got a concrete look at what post-quantum cryptography looks like when it’s baked directly into commercial silicon.
Industry News
IonQ posts record revenue, up 287% year-on-year
On August 5, IonQ reported second-quarter 2026 revenue of $80.1 million, up 287% from a year earlier and 20% above its own guidance, marking the company’s fifth consecutive quarter of record results. International revenue made up roughly half the total, commercial customers about 60%, and non-computing products (networking, security, sensing) around 25% — evidence, the company says, that it is no longer a single-product business. IonQ also closed its $1.8 billion acquisition of SkyWater Technology, giving it onshore semiconductor design, fabrication, and packaging capabilities, and raised its full-year revenue guidance to $280-290 million. The company additionally reported breakeven quantum error correction using qLDPC codes on engineering test systems, an early validation step for its fault-tolerant “walking cat” architecture.
BTQ and ITRI clear a 28nm milestone for post-quantum memory chips
On August 7, BTQ Technologies and Taiwan’s Industrial Technology Research Institute announced the successful validation of BTQ’s Quantum Compute-in-Memory (QCIM) architecture inside a TSMC 28-nanometer design environment. The chip performs cryptographic operations tied to NIST’s FIPS 203, 204, and 205 post-quantum standards directly inside memory rather than shuttling data to a separate compute unit, targeting long-lived embedded devices in military, industrial, automotive, and IoT systems. BTQ expects to ship test chips to select customers and partners by the end of 2026.
Research Highlights
D-Wave and MIT report hardware gains on two different fronts
D-Wave reported a roughly 500-nanosecond two-qubit entangling gate at approximately 99.9% fidelity on dual-rail superconducting qubits, with native erasure detection keeping residual errors low enough to meaningfully improve prospects for logical qubits built from this approach. Separately, MIT researchers grew air-stable, wafer-scale ultrathin niobium diselenide by sandwiching the material between graphene and silicon dioxide — an encapsulation technique that prevents oxidation while preserving the high kinetic inductance needed for compact superconducting circuits.
SaxonQ opens orders for 128- and 512-qubit room-temperature diamond computers
Following its late-July announcement, German startup SaxonQ this week opened commercial orders for its SXQ128 and SXQ512 systems — diamond nitrogen-vacancy processors that run at room temperature, fit in a standard server rack, and plug into a wall outlet. The company reports single-qubit gate fidelity up to 99.92%, driven by a proprietary sulfur co-implantation process that raises NV-center manufacturing yield above 85%, versus the 1-10% typical of older methods. Two-qubit gate fidelity and cross-core entanglement performance have not yet been published independently.
Security Watch
BTQ’s 28nm post-quantum memory chip (see Industry News) is this week’s clearest signal that PQC is moving from software standards into physical hardware for embedded and long-lived devices. Separately, OptQC and NTT deepened their partnership toward a one-million-qubit-class optical quantum computer by fiscal 2030, with 10,000-qubit verification targeted for 2028 — a roadmap that, if realized on schedule, would sharpen the urgency around exactly the kind of migration BTQ’s chip is meant to support.
The Bigger Picture
This week’s news split cleanly along a familiar line: commercial validation (IonQ’s earnings, SaxonQ’s open orders) on one side, and deeper hardware and cryptographic engineering (D-Wave’s gate fidelity, MIT’s superconductors, BTQ’s memory chip) on the other. Both matter for the same reason — a sector maturing from lab demonstrations into products doesn’t stop needing physics breakthroughs, it just needs them to show up on a schedule investors and customers can plan around.
Upcoming Events
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