Explore recent breakthroughs in quantum teleportation, the science of secure communication, and quantum computing.
Category: computing – Page 32
Achieving the full potential of quantum computing will require the development of quantum gates—circuits that carry out fundamental operations—with much higher fidelity than is currently available. An average gate fidelity surpassing 99.9%, for example, would enable not only efficient fault-tolerant quantum computing with error correction but also effective mitigation of errors in current noisy intermediate-scale quantum devices. In this work, we report on a two-qubit gate that achieves that milestone and sustains it for 12 h.
Superconducting qubits, with their ease of scalability and controllability, are prime candidates for building quantum processors. One type known as a transmon is renowned for its high coherence and ease of manufacturing and is thus already widely embraced in academia and industry. In general, single-qubit gates need negligible coupling between two transmon qubits, whereas two-qubit gates require a large coupling. This necessitates a coupling mechanism that can be tuned to both nearly zero and a very large value.
Various coupling schemes based on transmons have been shown to address this issue. Our work focuses on an innovative coupler known as the double-transmon coupler (DTC), which has been only theoretically proposed. We report the first experimental realization of the DTC, achieving gate fidelities of 99.9% for two-qubit gates and 99.98% for single-qubit gates, demonstrated by using two transmons coupled by the DTC.
Scientists at Washington State University and Lawrence Berkeley National Laboratory have discovered a way to make ions move more than ten times faster in mixed organic ion-electronic conductors. These conductors combine the advantages of the ion signaling used by many biological systems, including the human body, with the electron signaling used by computers.
The new development, detailed in the journal Advanced Materials, speeds up ion movement in these conductors by using molecules that attract and concentrate ions into a separate nanochannel creating a type of tiny “ion superhighway.”
Money from the CHIPS and Science Act is officially coming to Upstate New York.
GlobalFoundries’ $1.5 billion agreement with the Commerce Department to support expansion plans in Saratoga County and modernization efforts in Vermont has been finalized. The award comes after a Preliminary Memorandum of Terms announced in February.
The award will mainly be used to expand their Malta, New York fab site, adding technology the company already uses in other countries like Germany and Singapore. This will allow them to increase the supply of domestically made computer chips, which are essential in electronic devices from smartphones to aerospace and defense technology.
Evidence suggests Mars could very well have been teeming with life billions of years ago. Now cold, dry, and stripped of what was once a potentially protective magnetic field, the red planet is a kind of forensic scene for scientists investigating whether Mars was indeed once habitable, and if so, when.
The “when” question in particular has driven researchers in Harvard’s Paleomagnetics Lab in the Department of Earth and Planetary Sciences. A new paper in Nature Communications makes their most compelling case to date that Mars’ life-enabling magnetic field could have survived until about 3.9 billion years ago, compared with previous estimates of 4.1 billion years—so hundreds of millions of years more recently.
The study was led by Griffin Graduate School of Arts and Sciences student Sarah Steele, who has used simulation and computer modeling to estimate the age of the Martian “dynamo,” or global magnetic field produced by convection in the planet’s iron core, like on Earth. Together with senior author Roger Fu, the John L. Loeb Associate Professor of the Natural Sciences, the team has doubled down on a theory they first argued last year that the Martian dynamo, capable of deflecting harmful cosmic rays, was around longer than prevailing estimates claim.
Researchers at Karolinska Institutet and Karolinska University Hospital have developed a microscopy method that enables detailed three-dimensional (3D) RNA analysis at cellular resolution in whole intact mouse brains. The new method, called TRISCO, has the potential to transform our understanding of brain function, both in normal conditions and in disease, according to a new study published in Science.
Despite great advances in RNA analysis, linking RNA data to its spatial context has long been a challenge, especially in intact 3D tissue volumes. The TRISCO method now makes it possible to perform three-dimensional RNA imaging of whole mouse brains without the need to slice the brain into thin sections, which was previously necessary.
“This method is a powerful tool that can drive brain research forward. With TRISCO, we can study the complex anatomical structure of the brain in a way that was previously not possible,” says Per Uhlén, professor at the Department of Medical Biochemistry and Biophysics, Karolinska Institutet, and the study’s last author.
Scientists have developed a method to improve the stability and efficiency of organic light-emitting diodes (OLEDs), a technology used in smartphones, TVs, and other electronic displays.
This advancement utilizes a unique type of molecule that has the potential to extend the lifespan of OLED devices significantly.
The researchers present a novel way to design organic molecules that can maintain their stability and efficiency over time, even in high-stress conditions. The research is published in the journal Nature Communications.
Moore’s Law, the guiding concept in computing, is an observation made by Intel co-founder Gordon Moore. According to this law, the number of transistors on a device doubles roughly every two years, hence increasing performance. For years, this idea has driven the semiconductor sector.
In the fast-paced world of technology, not many ideas have been as impactful as Moore’s Law. The principle, first highlighted in 1965, predicted that the number of transistors on a microchip would double about every two years, resulting in rapid advancements in computing power. Yet, it has been observed that the transistor count does not merely follow Moore’s Law but surpasses it in significant ways.
With that thought, AIM has put together this article highlighting the number of times Moore’s Law was challenged.
CHANDLER, Ariz. – The radiation-tolerant RTG4 field-programmable gate arrays (FPGAs) with lead-free flip-chip bumps from Microchip Technology Inc. in Chandler, Ariz., have earned the Qualified Manufacturers List (QML) Class V status from the U.S. Defense Logistics Agency (DLA).
These radiation-tolerant FPGAs are for critical space programs. QML Class V is the highest level of qualification for space components for human-rated, deep-space, and national security space programs.
RTG4 FPGAs offer more than 150,000 logic elements, and come in flip-chip package construction where flip-chip bumps connect the silicon die and the package substrate for extended the longevity.