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

What is 'World Quantum Day?' Google Doodle April 14 explained

The latest "Google Doodle" to adorn the Google search engine home page is celebrating achievements in quantum physics - and ...

Scientists Make Breakthrough on 40-Year-Old 2D Physics Puzzle

By manipulating ultrafast quantum particles under extreme conditions, researchers have begun to probe growth dynamics in unprecedented detail. Why do patterns emerge as surfaces grow, whether in ...

Curious about quantum? Check out training options from ISC2, IBM, AWS and more

ISC2 released a 30-minute primer on the cybersecurity implications of quantum computing. If you want to dig deeper, there are many quantum training options that don't require going back to school for a PhD.

‘Fearless’ graduate students are forging a new quantum frontier

The Princeton Quantum Initiative’s Ph.D. program is helping pioneer a field that promises to define the next era of discovery and innovation.

University of Arkansas names quantum physicist as interim director of research institute

The University of Arkansas has named an interim director to lead its Institute for Integrative and Innovative Research (I³R), following founding director Ranu Jung stepping down last month.

That ‘quantum heartbeat detector’ allegedly used to find the lost US pilot? Experts are skeptical

A story claims a revolutionary skunk works built a quantum sensor that was used to locate a missing airman by reading his pulse from 40 miles away. But physicists say the laws of biomagnetism make ...

Multitasking quantum sensors can measure several properties at once

A special class of sensors leverages quantum properties to measure tiny signals at levels that would be impossible using ...

What is the Planck constant? The tiny number behind World Quantum Day and the kilogram

Google's latest Doodle highlights quantum physics, showcasing the Bloch sphere and qubits. This celebrates World Quantum Day, ...

What is World Quantum Day? Why April 14 matters

World Quantum Day 2026, which takes place on April 14, is a global celebration all about recognizing how quantum science and ...

Show HN: A book that builds GPT-2, Llama 3, DeepSeek from scratch in PyTorch

I'm a software engineer who works with LLMs professionally (Forward Deployed Engineer at TrueFoundry). Over the past year I built up implementations of five LLM architectures from scratch and wrote a book around them.The progression:- Ch1: Vanilla encoder-decoder transformer (English to Hindi translation) - Ch2: GPT-2 124M from scratch, loads real OpenAI pretrained weights - Ch3: Llama 3.2-3B by swapping 4 components of GPT-2 (LayerNorm to RMSNorm, learned PE to RoPE, GELU to SwiGLU, MHA to

Show HN: Why Rotating Vectors Makes Compression Beautiful

I've been intrigued about how quantization works. I went down a rabbit hole to understand the pieces and came out the other side with some genuinely surprising findings

Multitasking quantum sensors can measure several properties at once

A special class of sensors leverages quantum properties to measure tiny signals at levels that would be impossible using classical sensors alone. Such quantum sensors are currently being used to study the inner workings of cells and the outer depths of our universe.

Graphene just defied a fundamental law of physics

In a major breakthrough, scientists have observed electrons in graphene flowing like a nearly frictionless liquid, defying a core law of physics. This exotic quantum state not only reveals new fundamental behavior but could also unlock powerful future technologies.

This simple change stops robot swarms from getting stuck

In crowded environments, more robots don’t always mean faster results—in fact, too many can bring everything to a standstill. Harvard researchers discovered a surprising fix: adding a bit of randomness to how robots move can actually prevent gridlock and boost efficiency. By allowing robots to “wiggle” slightly instead of marching in straight lines, they can slip past each other and keep tasks flowing smoothly.

Show HN: Three backtested quant strategies as Jupyter notebooks

I've spent a few years building quant strategies and most of the work isn't the math — it's the plumbing: getting clean data, structuring the backtest so it doesn't look at the future, generating a readable tearsheet. I packaged three of my working strategies as self-contained notebooks so someone can go from zero to a proper backtest in an afternoon.The three strategies:1. Funding Rate Carry — Goes long assets with consistently negative funding (market paying you to hold) wh

Show HN: Quant Job Market Visualizer

Inspired by karpathy's US job market visualizer[0], I started to dabble with the idea of building live dashboards for certain job markets, starting with quant finance. I extract the career pages of pretty much every major quant firm and classify each posting with a lightweight LLM ETL pipeline. The data is updated daily and the full dataset is available as SQLite for anyone who wants to do their own analysis.[0] https://karpathy.ai/jobs/

IonQ (IONQ) Stock Surges 16% on Major DARPA Quantum Computing Deal

IonQ (IONQ) stock rallies 16% to $34.56 after winning DARPA quantum contract, advancing scalable networks and hybrid quantum ...

France bets €500 million that quantum computing is the tech race Europe can finally win

Five French startups are competing for €500M in government funding to build fault-tolerant quantum computers, with Alice & Bob's cat qubits emerging as a serious contender against US rivals.

Multitasking quantum sensors can measure several properties at once

A special class of sensors leverages quantum properties to measure tiny signals at levels that would be impossible using classical sensors alone. Such quantum sensors are currently being used to study the inner workings of cells and the outer depths of our universe.Particularly promising are solid-state quantum sensors, which can operate at room temperature. Unfortunately, most solid-state quantum sensors today only measure one physical quantity at a time — such as the magnetic field, temperatur