DNSE Securities reports AMD lets data centers run more work on fewer servers
The data center math has changed, allowing operators to run more work on fewer servers, reducing power and costs.
⚡ QC News
The latest news and developments in quantum computing
Quantinuum leaders to speak at London investment conference
Quantinuum leaders will discuss investment opportunities at the Bernstein 23rd Annual Pan-European Strategic Decisions Conference, September 9-10 in London.
Quantum Zeitgeist Weekly Digest
Welcome to this week’s quantum technology digest. This compilation covers advances across hardware development, software tools, and early applications of quantum computing. Several articles demonstrate IBM’s continued leadership, with updates to its processors, error mitigation techniques, and simulation capabilities.
Quantum Measurement, How Reading a Qubit Works
Quantum measurement pulls one classical answer out of a quantum state, and the Born rule of 1926 gives each outcome a probability equal to the squared magnitude of its amplitude. Readout fidelities are quoted above ninety-nine percent, and readout speed sets how fast an error-correction cycle can turn, so hardware teams spend more effort on it than on the qubits.
The Steane Code Explained
Andrew Steane's 1996 code uses a classical Hamming code from 1950 twice, once for bit flips and once for phase flips, so seven physical qubits protect one logical qubit. Its cheap gates alone cannot compute anything a classical machine cannot, and the T gate that fills the gap comes from magic state distillation, the largest cost in any fault-tolerant design.
How Do Photonic Quantum Computers Work?
Photonic quantum computers encode a qubit in a single particle of light, steer it through a programmable maze of glass and count it with superconducting detectors, and the chips come off ordinary 300 millimetre semiconductor lines. As of mid-2026 no photonic platform has demonstrated a peer-reviewed logical qubit, and PsiQuantum's Nature paper puts fault tolerance at millions of physical qubits.
What Now For Quantum Stocks?
Five years ago this month, a quantum company rang the opening bell on a US exchange for the first time. That company was Arqit, a British quantum encryption firm briefly valued at close to $3 billion, now valued considerably less. Seven pure-play quantum computing companies have followed it onto American markets since, and between them they have produced a five-year record that deserves closer inspection.
Edward Thorp, The Man Who Beat The Odds
Edward Thorp used the Kelly criterion, derived from Claude Shannon's information theory, to beat blackjack in Beat the Dealer in 1962 and then to run Princeton/Newport Partners for nearly twenty years. He is not a quantum scientist, and his rule of staking only a measured edge is awkward to apply to a technology whose odds are still moving.
Science Tokyo details nanoscale control of magnetic polarization
Science Tokyo researchers achieved reliable reversal of magnetization in 190 nm structures of BiFe₀.₉Co₀.₁O₃, a multiferroic material offering potential for low-power data storage.
Four extra qubits enough for some quantum simulations
Researchers achieved exponentially accurate open quantum system modeling, a key step for advancing quantum technologies, using only four extra qubits.
NVIDIA speeds up financial clustering with GPU factorization
Quant strategies group instruments for portfolio construction, risk aggregation, statistical arbitrage, and trade surveillance, but incorrect groupings can obscure risk and fail under stress. AdaptGrow, a GPU-accelerated matrix factorization algorithm, turns correlation and tail-dependence matrices into clusters and factor loadings at single-GPU and multi-node scale.
Four-qubit entanglement structure fully characterized
Advances in quantum control now allow full characterization of entanglement structure in multipartite systems, specifically a four-qubit system.
Perfect qubit transfer no longer needs a laser pulse
Perfect qubit transfer, even with identical qubits and chiral waveguides, faced a limit of 4/e^2≈0.54 due to pulse shape mismatch.
RIKEN will use QunaSys software to link supercomputer with quantum chips
RIKEN’s JHPC-quantum project will integrate QunaSys’s QURI SDK Enterprise, linking the Fugaku supercomputer with quantum chips like IBM’s “ibm_kobe” and “Reimei”.
Researchers Image Spatial Vacuum Fluctuations of a Quantum Field
Directly visualising the inherent uncertainty within empty space has long remained an elusive goal. Now, images from a Bose, Einstein condensate reveal spatial patterns arising from quantum vacuum fluctuations, a feat previously limited to observing their indirect effects via electromagnetic sampling. This system uniquely emulates a massive relativistic sine-Gordon field, enabling laboratory studies beyond current theoretical capabilities.