They say that one can miss the forest for the trees. But it’s often worth taking a closer look at the trees to make sense of the dense, brambly whole. That’s what a Stanford University group did to tackle a thorny quantum-information problem in diamond. A star material for hosting quantum information, diamond nevertheless presents … Read more
The spin of the electron is nature’s perfect quantum bit, capable of extending the range of information storage beyond “one” or “zero.” Exploiting the electron’s spin degree of freedom (possible spin states) is a central goal of quantum information science. Recent progress by Lawrence Berkeley National Laboratory (Berkeley Lab) researchers Joseph Orenstein, Yue Sun, Jie … Read more
In principle, one shouldn’t compare apples to oranges. However, in topology, which is a branch of mathematics, one must do just that. Apples and oranges, it turns out, are said to be topologically the same since they both lack a hole—in contrast to doughnuts or coffee cups, for instance, which both have one (the handle … Read more
Quantum entanglement is a fascinating and perplexing phenomenon in the realm of quantum mechanics, challenging our classical intuitions about the nature of reality. It is a concept that has captured the imagination of scientists and the public alike, leading to deep philosophical discussions and groundbreaking technological advancements. This journey into non-locality takes us into the … Read more
Two physicists at the University of Konstanz are developing a method that could enable the stable exchange of information in quantum computers. In the leading role: photons that make quantum bits “fly.” Quantum computers are considered the next big evolutionary step in information technology. They are expected to solve computing problems that today’s computers simply … Read more
Quantum computing engineers at UNSW Sydney have shown they can encode quantum information—the special data in a quantum computer—in four unique ways within a single atom, inside a silicon chip. The feat could alleviate some of the challenges in operating tens of millions of quantum computing units in just a few square millimeters of a … Read more
A microprocessor is a pivotal component of modern computing devices, serving as the brain that executes instructions and performs calculations. It is a miniature electronic device that contains millions or even billions of transistors etched onto a single semiconductor chip. The evolution of microprocessors has been instrumental in advancing computing technology, enabling the development of … Read more
Making quantum systems more scalable is one of the key requirements for the further development of quantum computers because the advantages they offer become increasingly evident as the systems are scaled up. Researchers at TU Darmstadt have recently taken a decisive step toward achieving this goal. Quantum processors based on two-dimensional arrays of optical tweezers, … Read more