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The scientific feat is also ‘a breakthrough for practical applications because entangled molecules can be the building blocks for many future applications. says physicist Lawrence Cheuk.
No one knows who might get there first. The United States and China are considered the leaders in the field; many experts believe America still holds an edge.
As the race to master quantum computing continues, a scramble is on to protect critical data. Washington and its allies are working on new encryption standards known as post-quantum cryptography – essentially codes that are much harder to crack, even for a quantum computer. Beijing is trying to pioneer quantum communications networks, a technology theoretically impossible to hack, according to researchers. The scientist spearheading Beijing’s efforts has become a minor celebrity in China.
Quantum computing is radically different. Conventional computers process information as bits – either 1 or 0, and just one number at a time. Quantum computers process in quantum bits, or “qubits,” which can be 1, 0 or any number in between, all at the same time, which physicists say is an approximate way of describing a complex mathematical concept.
Keio University, The University of Tokyo, Yonsei University, Seoul National University, and The University of Chicago and IBM to collaborate on preparing the future quantum workforce.
IBM announced plans to work with top universities from Japan, South Korea and the United States to advance quantum education.
Batteries that exploit quantum phenomena to gain, distribute and store power promise to surpass the abilities and usefulness of conventional chemical batteries in certain low-power applications. For the first time, researchers, including those from the University of Tokyo, take advantage of an unintuitive quantum process that disregards the conventional notion of causality to improve the performance of so-called quantum batteries, bringing this future technology a little closer to reality.
When you hear the word “quantum,” the physics governing the subatomic world, developments in quantum computers tend to steal the headlines, but there are other upcoming quantum technologies worth paying attention to. One such item is the quantum battery which, though initially puzzling in name, holds unexplored potential for sustainable energy solutions and possible integration into future electric vehicles. Nevertheless, these new devices are poised to find use in various portable and low-power applications, especially when opportunities to recharge are scarce.
At present, quantum batteries only exist as laboratory experiments, and researchers around the world are working on the different aspects that are hoped to one day combine into a fully functioning and practical application. Graduate student Yuanbo Chen and Associate Professor Yoshihiko Hasegawa from the Department of Information and Communication Engineering at the University of Tokyo are investigating the best way to charge a quantum battery, and this is where time comes into play. One of the advantages of quantum batteries is that they should be incredibly efficient, but that hinges on the way they are charged.
Scientists are developing an experiment to test whether gravity is quantum – one of the deepest questions about our universe. Scientists are developing an experiment to test whether gravity is quantum In quantum mechanics, which describes the behavior of atoms and molecules –objects behave d.
A study published in the journal Physical Review Letters by researchers in Japan solves a long-standing problem in quantum physics by redefining the uncertainty principle.
Werner Heisenberg’s uncertainty principle is a key and surprising feature of quantum mechanics, and he can thank his hay fever for it. Miserable in Berlin in the summer of 1925, the young German physicist vacationed on the remote, rocky island of Helgoland, in the North Sea off the northern German coast. His allergies improved, and he was able to continue his work trying to understand the intricacies of Bohr’s model of the atom, developing tables of internal atomic properties, such as energy, position and momentum.
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Quantum information scientists are always on the hunt for winning combinations of materials, materials that can be manipulated at the molecular level to reliably store and transmit information. Following a recent proof-of-principle demonstration, researchers are adding a new combination of compounds to the quantum materials roster.
In a study reported in ACS Photonics, researchers combined two nanosized structures—one made of diamond and one of lithium niobate—onto a single chip. They then sent light from the diamond to the lithium niobate and measured the fraction of light that successfully made it across.
The greater that fraction, the more efficient the coupling of the materials, and the more promising the pairing as a component in quantum devices.
Quantum physics, the science of the very small, often challenges our common sense and intuition. But it also offers new possibilities for technological innovations that go beyond the limits of classical physics. One of these possibilities is the quantum battery, which uses quantum phenomena to store, transfer, and deliver energy more effectively than conventional batteries.
Quantum batteries
Quantum batteriesQuantum batteries are not yet ready for commercial use. Still, they can revolutionize fields that require low-power and portable energy sources, such as smart devices, sensors, and even electric vehicles.
A nitrogen-vacancy (NV) center is a defect in the crystal structure of diamond, where a nitrogen atom replaces a carbon atom in the diamond lattice and a neighboring site in the lattice is vacant. This and other fluorescent defects in diamond, known as color centers, have attracted researchers’ attention owing to their quantum properties, such as single-photon emission at room temperature and with long coherence time. Their many applications include quantum information encoding and processing, and cell marking in biological studies.
Microfabrication in diamond is technically difficult, and nanodiamonds with color centers have been embedded in custom-designed structures as a way of integrating these quantum emitters into photonic devices. A study conducted at the University of São Paulo’s São Carlos Institute of Physics (IFSC-USP) in Brazil has established a method for this, as described in an article published in the journal Nanomaterials.
“We demonstrated a method of embedding fluorescent nanodiamonds in microstructures designed for this purpose, using two-photon polymerization [2PP],” Cleber Mendonça, a professor at IFSC-USP and last author of the article, told Agência FAPESP. “We studied the ideal concentration of nanodiamond in the photoresist to achieve structures with at least one fluorescent NV center and good structural and optical quality.” The photoresist is a light-sensitive material used in the fabrication process to transfer nanoscale patterns to the substrate.
Recent research has unlocked key aspects of high-critical-temperature superconductors, identifying their unique ‘strange metal’ state and a crucial quantum critical point. This discovery, resulting from collaborative efforts and extensive experiments, paves the way for advanced superconducting technologies.
Taking a significant step forward in superconductivity research, the discovery could pave the way for sustainable technologies and contribute to a more environmentally friendly future.
The study just published in Nature Communications by researchers from Politecnico di Milano, Chalmers University of Technology in Göteborg, and Sapienza University of Rome sheds light on one of the many mysteries of high-critical-temperature copper-based superconductors: even at temperatures above the critical temperature, they are special, behaving like “strange” metals. This means that their electrical resistance changes with temperature differently than that of normal metals.
