Scientists have introduced a form of quantum entanglement known as frequency-domain photon number-path entanglement. This advance in quantum physics involves an innovative tool called a frequency beam splitter, which has the unique ability to alter the frequency of individual photons with a 50% success rate.
In the quantum world, processes can be separated into two distinct classes. One class, that of the so-called "perturbative" phenomena, is relatively easy to detect, both in an experiment and in a mathematical computation. Examples are plentiful: the light that atoms emit, the energy that solar cells produce, the states of qubits in a quantum computer.
Cryptographers are scrambling to understand an algorithm that could undermine the mathematics behind next-generation encryption methods, which are intended to protect against quantum computers
An international collaboration of researchers, led by Philip Walther at University of Vienna, have achieved a significant breakthrough in quantum technology, with the successful demonstration of quantum interference among several single photons using a novel resource-efficient platform. The work published in Science Advances represents a notable advancement in optical quantum computing that paves the way for more scalable quantum technologies.
Dwarf Fortress is many things. Most fans of PC gaming know it as a byzantine simulation of a colony of dwarves. Look closer, however, and you’ll also find that it’s a byzantine simulation of geologic forces, weather systems, and tidal movements; language, psychology, and poetry; medieval combat, of course, and even siegecraft. But the reason that I love the game so much is that it also simulates its own history, with tales of epic heroes and powerful artifacts strewn all across its procedurally...
The iPhone’s sleep mode has a ton of features that can help you get a better night’s sleep, from silencing notifications to enabling sleep detection with your Apple Watch. Here’s a primer showing how to turn it on and off, and how to get the most out of its features.
Quantum mechanics is simultaneously our most powerful and weirdest scientific theory. It’s powerful because it offers exquisite control over the nanoworld of molecular, atomic, and subatomic phenomena. It’s weird because, while we have a complete mathematical formalism, we physicists have been arguing for more than a century over what that formalism means. In other words, unlike other physical theories, the mathematics of quantum mechanics has no clear interpretation. That means physicists and...
The three big seal rescue centres along the Dutch coast have dealt with 35 seals this year, which have become entangled in fishing nets or other litter, the Volkskrant reported on Tuesday. In an average year, the centres help some 40 seals in total. The problem is particularly an issue for young seals who “grow” into whatever they have become caught up in. “It does not expand with them and that leads to fatal trauma to the airways and blood
Sasha Abramsky Arizona’s 1864 abortion law has local party leaders flailing to avoid alienating voters.
Nearly everything you do on your desktop, laptop, phone, and tablet begins with a Domain Name System (DNS) query. Essentially, DNS turns domain names (such as ZDNET.com) into an IP address so web browsers and apps know where to get the information you want. Without DNS, you'd wind up having to type 34.149.132.124 every time you wanted to go to ZDNET.com. Or, if you run a Google search, DNS is at work. Also: How to change your IP address with a VPN The problem is that standard DNS isn't secure,...
Researchers simulated a key quantum state at one of the largest scales reported, with support from the Quantum Computing User Program, or QCUP, at the Department of Energy's Oak Ridge National Laboratory.