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

AI and quantum computers revolutionize discovery of quantum materials

A quiet transformation is unfolding in the way scientists design the materials that power modern technology. From faster computers to energy-saving electronics, the next generation of breakthroughs may come from materials shaped not just by chemistry, but by quantum physics.

Microsoft's quantum computing technology called into question, again

By Stephen Nellis SAN FRANCISCO, June 24 (Reuters) - A new critique in the scientific journal Nature is raising fresh ...

Can video games help us better understand quantum mechanics?

The world of quantum video games is vast – there are hundreds that are either inspired by quantum mechanics or use quantum computers in their development. Columnist Karmela Padavic-Callaghan explores how these could change our understanding of quantum physics, or even help us make better devices

Physicists simulated a famous quantum effect in a water tank and found something nobody expected

Science News: Quantum physics has a long history of producing results that seem impossible until someone finds a way to watch them happen in a completely different .

Time may be an illusion derived from quantum entanglement

Time has always seemed like the one thing physics could count on. Matter changes, stars die, particles flicker in and out, ...

Seven exotic quantum phases predicted in ultracold magnetic atoms, including topological superconductivity

Strongly interacting quantum particles are key to some of the most fascinating phenomena in modern physics—from magnetism and ...

Fault-Tolerant Quantum Computer by 2028: DOE Quantum Genesis Sets Hard Deadline

Fault-tolerant quantum computer by 2028: the DOE’s Quantum Genesis initiative sets a hard deadline for the world’s first scientifically relevant, error-corrected quantum system, backed by a federal

The U.S. Government Is Betting Billions on Quantum Computing. These 3 Stocks Are the Biggest Winners.

The bigger opportunity in quantum computing may be in companies building the infrastructure and security to make a quantum future possible.

Presidential order addresses quantum computing gaps

This week's presidential order aims to close the gaps holding back U.S. quantum computing, from a thin supplier base to the lack of any way to compare quantum systems.

Can Microsoft build a quantum computer by 2029? Scientists have doubts

A new Nature critique questions Microsoft’s quantum computing research, raising doubts about a key study behind its goal of ...

Amazon’s AI chief predicts a commercial quantum computer will be usable within 7 years. Why this matters.

Quantum computing has long been the technology that always seems to be 10 years away. Now, one of the most senior technology ...

Trump orders push to speed up quantum computer development

US President Donald Trump has ordered an accelerated push to develop quantum computers and expand their use across the US ...

Researchers cast new doubt on Microsoft’s quantum computing advance

Microsoft is not the only company researching quantum computing hardware, with Google, IBM, and Amazon also working on ...

Show HN: I Derived a Steak

After years of juggling imprecise grilling recipes and temperatures, I've made a grilling calculator that derives perfect meat results from thermal models, Fick's law of diffusion, protein structures, and more.Along the way I calculated exactly how far in advance to salt meat (spoiler: even when it's frozen!), realized the best dry brine is usually "cling brine" (covered), derived approximate charcoal quantities with physics, and much more.As with the pancake calculator[

Ask HN: How do we measure software in LLM era?

A bit of a rant. Sorry!With the probablistic pluggable 'brain' existing in parts of the solution how are you measuring anything is better or worse?I am at a loss to quantify whether anything is improving or worsening anything. It probably is also because of the various metrics that keeps popping up* Accuracy* Cost of running* Context* Size* Time* Turnsall these vary in a large band even with the same 'brain' on the same 'provider'. It is not so different than a d

Non-Hermitian geometry reveals when quantum amplification depends only on start and end points

In quantum mechanics, the geometry of quantum states has emerged as a powerful framework for understanding phenomena ranging from electrical conductivity to superconductivity. One research direction aims to extend these geometric concepts to non-Hermitian quantum mechanics—where systems can exchange energy with their environment—including the generalization of the Berry phase, a key geometric quantity, to the non-Hermitian case.

Show HN: I built a hardware quantum RNG and wired it into a Magic 8-Ball

Gday, author here!I've wanted to hack together a "real" quantum random number generator for another upcoming project, and I got carried away a bit, and went down the 'over-engineering' cliff. So, for your nerdy enjoyment, I have documented it all up, and I added something cool for fellow "Multiple World Interpretation" followers in the Quantum Mechanics debate.This QRNG uses sexy bits: Each is the decision of a photon to go left or right after hitting a 50:50

Optical readout of a superconducting qubit using a piezo-optomechanical transducer

Superconducting quantum processors have made important progress in size and computing potential. However, the practical cryogenic limitations of operating large numbers of superconducting qubits are becoming a bottleneck for further scaling. Due to the low thermal conductivity and the dense optical multiplexing capacity of telecommunications fibre, converting qubit signal processing to the optical domain using microwave-to-optics transduction would substantially relax the strain on cryogenic space and thermal budgets. Here we demonstrate optical readout of a superconducting transmon qubit through an optical fibre connected via a coaxial cable to a fully integrated piezo-optomechanical transducer. Using a demolition readout technique, we achieve a single-shot readout fidelity of 81%. Our results illustrate the benefits of piezo-optomechanical transduction for low-dissipation operation of large quantum processors. Superconducting qubits are measured using microwaves, posing constraints on its size and thermal budgets. The electro-optic transceiver presented here can be used to perform optical readout without affecting qubit performance.

Advanced computer modeling predicts molecular-qubit performance

A qubit is the delicate, information-processing heart of a quantum device. In the coming decades, advances in quantum information are expected to give us computers with new, powerful capabilities and ...