entangled dot cloud
MIT engineers develop a magnetic transistor for more energy-efficient electronics
Transistors, the building blocks of modern electronics, are typically made of silicon. Because it’s a semiconductor, this material can control the flow of electricity in a circuit. But silicon has fundamental physical limits that restrict how compact and energy-efficient a transistor can be.MIT researchers have now replaced silicon with a magnetic semiconductor, creating a magnetic transistor that could enable smaller, faster, and more energy-efficient circuits. The material’s magnetism strongly
Vector Quantization and Product Quantization
Using Indices to Represent Vectors In a Finite Set
Quantum computers do not test every solution at once
*This is adapted from my live interview session with Sebastian Hassinger, formerly IBM Quantum and AWS Quantum Technologies. Words are his own.Superposition and entanglement get thrown around loosely, and when people ask me which one causes the most trouble, the honest answer is that the biggest problem is not really a misunderstanding of either. It is more of an ambiguity. People say that a quantum computer tests all solutions simultaneously and then selects the right one, and that is not liter
Spin audit of SQD/QSCI quantum-chemistry benchmarks on iron–sulfur clusters
Author here.Background, for anyone who hasn't followed this fight: IBM's iron–sulfur SQD results (Sci. Adv. 2025) are one of the flagship "quantum computers are useful for chemistry now" claims, and a published critique (arXiv:2501.07231) argues the quantum samples never beat classical selected-CI at matched cost. That argument is still live.Both sides have been arguing about energies. Neither measured which electronic state these calculations actually converge to.So I measur
Is IonQ Stock a Buy After This 100-Qubit System Sale?
100 qubits sounds impressive, given that IonQ's most powerful system in 2025 only has 36 qubits. However, 100 physical qubits still can't get much work done. Theoretical research shows that ...
D-Wave Demonstrates Major Hardware Breakthrough for Quantum Error Correction, Advancing the Path to Practical, Fault-Tolerant Gate-Model Quantum Computing
D-Wave Quantum Inc. (Nasdaq: QBTS), (“D-Wave” or the “Company”), the only dual-platform quantum computing company providing ...
Levitating sensor for magnetic fields could detect ultrafaint brain activity
<p>Nature, Published online: 06 August 2026; <a href="https://www.nature.com/articles/d41586-026-02458-9">doi:10.1038/d41586-026-02458-9</a></p>The device’s simple design could rival much more complex alternatives in biophysics research — and could even be used to search for dark matter.
Why Do Some People Never Get Cancer? The Answer May Be in Their Blood
Researchers will hunt for antibodies in the blood of people who lived past 100, drank heavily, or smoked—but avoided cancer. Jeanne Calment was over 122 years old when she passed away. The oldest person in history, she smoked for nearly a century, but never developed cancer.Why does cancer grow, spread, and become deadly in some people but not others? Even twins, who share similar genes and lifestyles can differ widely in cancer risk. Many factors likely contribute, but a bold new study, called
New quantum microscopy trick quadruples microscope resolution
Three years after a team of Caltech scientists showed that pairs of entangled photons could double the resolution of a light microscope, the same lab has figured out a way to double down on that improvement. They have now achieved a fourfold resolution boost compared to a classical microscope, using a new optical design that sends one of the entangled photons through the microscope's optics three times rather than just once.
X(2370) emerges as glueball-dominated particle in collider experiments
At the International Conference on High Energy Physics in Brazil, the BESIII Collaboration report that, after 15 years of sustained research, it identified the dominant constituent of the X(2370) as a pseudoscalar glueball with spin-parity quantum numbers of 0⁻⁺.
Two-qubit entangling gate flags its own errors as detectable photon losses
Quantum errors are a normal part of quantum computing because fragile physical qubits (the tiny components storing data) can easily break down because of environmental noise, like heat, stray signals or microscopic vibrations. Typical fixes involve vast amounts of extra hardware qubits, which make computers larger, more expensive and harder to build.
Show HN: CityEdit – Open-source map for voting on NYC street changes
CityEdit (cityedit.org, https://github.com/edbltn/city-edit) is a map where anyone can propose street changes, e.g. safer crossings, new bike lanes, improved tree beds. Neighbors can then vote on those proposals.We just soft launched the app by hanging posters with QR codes at NYC's statistically most dangerous intersections (from open crash data at https://data.cityofnewyork.us/Public-Safety/Motor-Vehicle-Co...). Read more at https://spheri
Show HN: Scout – a self-hosted Discord AI memory bot
Scout, a self-hosted Discord memory bot. Listens to the conversation and creates summaries and answers questions.<p>Runs Qwen3 8B Instruct, in a 4-bit quantization, served locally through Ollama. It can answer questions about the conversation or generate summaries for when you missed out on the conversation.
Show HN: Neal – Codex writes the code, Claude reviews it
neal is a CLI I wrote while trying to use an LLM coding agent (in this case, Codex GPT-5.4) to work autonomously on a migration of our large frontend codebase. A few things came up during that project that guided the development of neal:1. Telling an agent to "keep working unless blocked" doesn't actually work over long stretches of time.2. Large projects should be broken up into smaller chunks of work.3. The coding agent should start each chunk of work with a fresh context to pre
Show HN: Ocean – All your team's agent sessions in one place
I spend a lot of time in Claude Code and Codex with my friend. We kept losing the context behind changes because every agent session lived on one person's laptop, and by the time code made it into a PR, all the reasoning was gone.We tried commits, PRs, and docs, but they only really capture the end result, so we built a tool to keep all of our agent sessions in one searchable place.Now we (and our agents) can check out anyone's session and ask things like "what was Alex working on
Show HN: I made a self-built catalogue of education Simulation games
I'm quite intrigued by the new domain unlocked by AI - Simulation games!I want this catalogue to be education related, for players to take something home after playing the game.I'm a researcher of this domain, I will add more games, right now these are available:1. Race to AGI - Can you fight against the odds and run a Frontier AI Labs?
(Learning: To give users nuts and bolts of AI labs and models with some creative freedom)
2. Cloud Architect: Hum - Check your software architecture sk
Sunlight-powered setup generates quantum entanglement
Today's quantum technologies rely on energy-intensive lasers, raising concerns that scaling them up could further increase energy demands. In new work, researchers have demonstrated that quantum entanglement between photons can be generated directly from sunlight, offering a potential alternative.
Engineers build world's first portable diamond-powered quantum computer — it works at room temperature and can be plugged into an outlet
A German startup has debuted the world's first diamond-based quantum computing system to exceed 10 qubits.The machine, built by engineers at Saxon Q, is a nitrogen-vacancy (NV) quantum computer, meaning it uses defects in synthetic diamonds as quantum bits (qubits) to perform quantum operations. Qubits can be manipulated to represent the 0s and 1s of data, as well as quantum states that are superpositions of both the 0s and the 1s.The hardware is currently available i
A star’s violent death exposed a hidden supermassive black hole
A supermassive black hole has been found lurking about 30,000 light-years from the center of its galaxy—the first dormant black hole detected so far from a galactic core. It revealed itself only after shredding a passing star and producing a brief, brilliant flare. Astronomers think it may be the remnant of a devoured galaxy or a black hole flung outward during a chaotic cosmic encounter.
Cell-inspired nanoreactor turns sunlight into hydrogen peroxide
A new hollow nanoreactor mimics living cells to make hydrogen peroxide more efficiently using visible light. Its light-trapping cavity and proton-shuttling shell could open new possibilities for cleaner chemical manufacturing and artificial photosynthesis.