Quantum Physics, features and articles | Educational Science

Jan 16, 2018

How Fast Can Quantum Computers Get?

Over the past five decades, standard computer processors have gotten increasingly faster. In recent years, however, the limits to that technology have become clear: Chip components can only get so small, and be packed only so closely together, before they overlap or short-circuit. If companies are to continue building ever-faster...

Jan 19, 2018

China's Quantum-Key Network, the Largest Ever, Is Officially Online

China has the quantum technology to perfectly encrypt useful signals over distances far vaster than anyone has ever accomplished, spanning Europe and Asia, according to a stunning new research letter. Bits of information, or signals, pass through people's houses, the skies overhead and the flesh of human bodies every second...

Jan 23, 2018

The New Thinnest Mirrors in the World Use Quantum 'Excitons' to Reflect Light

Two separate teams of scientists have built the thinnest mirrors in the world: sheets of molybdenum diselenide (MoSe2), each just a single atom wide. The mirrors were developed at the same time at Harvard University and the Institute for Quantum Electronics in Zurich, and described in a pair of papers...

Jan 25, 2018

Crystal Slab of 'Snowflakes' to Become World's Tiniest Sonic Shield

Cut snowflakes out of sheets of paper, and you've got a nice winter art project. Grow a microscopic sheet of silicon crystal studded with snowflake-shaped holes, and you've got the thinnest sonic insulator ever designed, according to new research. A team of physicists, writing in a paper published Jan. 18...

Jan 25, 2018

Quantum Physicist Named 'Australian of the Year'

Chalk one up for the physicists, as 2018's Australian of the Year title goes to a quantum physicist whose work contributed to the creation of the world's thinnest wire and the first transistor made from a single atom. Michelle Yvonne Simmons, a professor of quantum physics in the Faculty of...

Mar 12, 2018

Quantum Physicists Doubled the Information Speed Limit of the Universe

There's a limit to how fast information can move through the universe, just like there's a limit to how fast everything else can move through the universe. It's a rule. But a team of quantum physicists, like quantum physicists often do, has figured out how to bend it. Under normal...

Apr 11, 2018

This Quantum Random Number Generator Can Never Be Hacked

Lotteries, accidents and rolls of dice — the world around us is full of unpredictable events. Yet generating a truly random series of numbers for encryption has remained a surprisingly difficult task. Now, researchers have used a mind-bending experiment relying on both Albert Einstein's theory of relativity and quantum mechanics,...

Apr 20, 2018

Quantum Radar Could Make Stealth Technology Obsolete

The frigid Canadian arctic is a rough place to try and catch a spy. For one, the region is smack dab on top of the world's magnetic North Pole, where the violently charged particles released by sunspots and solar flares are inevitably drawn. This solar interference makes it hard enough...

Apr 26, 2018

Swiss Scientists Perform Massive Test of 80-Year-Old, 'Spooky' Quantum Paradox

A team of Swiss scientists has performed a massive test of one of the strangest paradoxes in quantum mechanics, a huge example of the sort of behavior Albert Einstein skeptically called spooky action at a distance. The story begins more than 80 years ago. Way back in 1935, Einstein and...

Apr 30, 2018

These 'Spooky' Entangled Atoms Just Brought Quantum Computing One Step Closer

Scientists have made the biggest and most complex quantum-computer network yet, getting 20 different entangled quantum bits, or qubits, to talk to each other. The team was then able to read out the information contained in all those so-called qubits, creating a prototype of quantum short-term memory for the computer....

May 14, 2018

Lasers Could Make Computers 1 Million Times Faster

A billion operations per second isn't cool. Know what's cool? A million billion operations per second. That's the promise of a new computing technique that uses laser-light pulses to make a prototype of the fundamental unit of computing, called a bit, that could switch between its on and off, or...

Jul 16, 2018

Chinese Researchers Achieve Stunning Quantum-Entanglement Record

Scientists have just packed 18 qubits — the most basic units of quantum computing — into just six weirdly connected photons. That's an unprecedented three qubits per photon, and a record for the number of qubits linked to one another via quantum entanglement. So why is this exciting? All the...

Jul 24, 2018

Weird Paradox Says 2 Losses Equals a Win. And It Could Lead to Fast Quantum Computers.

Two losing games can add up to a winning one, according to a concept called Parrondo's paradox. Now, physicists have shown that this paradox also exists in the realm of quantum mechanics, the rules that govern subatomic particles. And it could lead to faster algorithms for future quantum computers. [The...

Jul 27, 2018

How Quantum Computers Could Kill the Arrow of Time

A new technique for quantum computing could bust open our whole model of how time moves in the universe. Here's what's long seemed to be true: Time works in one direction. The other direction? Not so much. That's true in life. (Tuesday rolls into Wednesday, 2018 into 2019, youth into...

Aug 22, 2018

Ancient Quasars Provide Incredible Evidence for Quantum Entanglement

Using two ancient galactic cores called quasars, researchers have taken a massive step forward toward confirming quantum entanglement — a concept that says that the properties of particles can be linked no matter how far apart in the universe they may be. If quantum entanglement is valid, then a pair...