University of Warwick researchers propose phonons as a bus linking distant qubits on a germanium-on-silicon chip, in a June 15 APL Quantum paper. The links target the nearest-neighbour limit on error correction, and their claimed hardware savings over surface-acoustic-wave schemes are argued from the design without a measurement behind them yet.
Reality
- Evidence35
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D-Wave opened a beta of its gate-model simulator, letting customers write and test error-aware programs against its dual-rail qubit design. Teams can now check algorithms against that design's errors while fault-tolerant hardware stays on D-Wave's roadmap.
Reality
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The milestone is packaging, not qubits: box-shaped cryostats that pack in rows, a cold volume 12 times larger, and a coupler meant to knit hundreds of chips into one machine.
Perspective Coverage
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- Builder 43%
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- Operator 27%
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- Investor 30%
Reality
- Evidence55
- Adoption8
- Hype gap+35
- Incentives70
- Confidence60
Quantum jumps were caught in trapped ions in 1986 and in photons in 2007. A resonator that rings for two milliseconds, read out by a superconducting qubit, now shows a single phonon going to zero as it happens.
Reality
- Evidence62
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Shunkai holds its qubits in optical tweezers at room temperature, starts with about 50 of them, and is slated to join a shared supercomputing facility as a quantum-GPU hybrid. Its scale-up target of 10,000 qubits is dated March 2031.
Reality
- Evidence52
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The 0.02% timing overhead comes from IonQ's own simulations of 88 memory blocks and magic factories, posted to arXiv. For anyone working through a cryptographic inventory, the readiness deadlines stand where they were.
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IonQ researchers report a real-time error-correction decoder that added under 0.3% to runtime at a CNOT error rate of 10^-4, and under 12% at five times that rate, on workloads simulated against the company's own proposed architecture.
Reality
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Stanford physicists report in Science the first real-time observation of quantum jumps of sound, using a superconducting qubit to check a mechanical resonator hundreds of times during its two milliseconds of vibration.
Reality
- Evidence58
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- Confidence62
Nvidia's CUDA-Q Logical simulates logical qubits, error-correction codes and QPU architectures side by side. The two customer results it launched with come from an architecture startup and a national lab, and both are models.
Reality
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- Confidence46
Xanadu and AMD have released an open-source plugin that treats a quantum processor as one node on a fast classical network. The whole case rests on a sub-three-microsecond loop time, and the announcement does not say how that figure was measured.
Reality
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The algorithm-level numbers are the part of the estimate that can be recompiled onto any fault-tolerant machine, and the headline 25.7 days on 19,397 physical qubits belongs to the trapped-ion architecture its own authors proposed.
Publishers:iacr.org
Reality
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IonQ's September 8 paper puts one secp256k1 key at just under 26 days on 20,000 physical qubits. The company's roadmap reaches 10,000 fault-tolerant qubits in 2027 and names no year for the larger machine.
Publishers:ionq.com
Reality
- Evidence38
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A Physical Review Letters paper from Chalmers puts a wide class of bosonic operations inside a single driving cycle. The 1,000-fold figure counts cycles, and no fidelity or hardware measurement accompanies it.
Reality
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The design pairs a long-lived qubit with a strongly interacting one through a coupler the group built earlier, and the reported gains in speed and fidelity come from simulation rather than from a fabricated chip.
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The trapped-ion roadmap has now delivered 32, 56 and 98 qubits in consecutive generations. What matters next is whether ion transport through junctions keeps scaling.
Reality
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- Confidence42
UC Davis researchers report in PRX Quantum a way to simulate noisy, high-fidelity magic-state preparation at polynomial cost. Error budgets can be tested rather than assumed.
Reality
- Evidence60
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- Hype gap+15
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- Confidence55