Electrical engineers in the accelerator physics group at TU Darmstadt have developed a design for a laser-driven electron accelerator so small it could be produced on a silicon chip. It would be inexpensive and with multiple applications. The design, which has been published in Physical Review Letters, is now being realised as part of an international collaboration.
IMAGE: The driving laser field (red) ‘shakes’ electrons in graphene at ultrashort time scales, shown as violet and blue waves. A second laser pulse (green) can control this wave and thus determine the direction of current. (Image credit: FAU/Christian Heide)
Being able to control electronic systems using light waves instead of voltage signals is the dream of physicists all over the world. The advantage is that electromagnetic light waves oscillate at petaherz frequency. This means that computers in the future could operate at speeds a million times faster than those of today. Scientists at Friedrich-Alexander University (FAU; Erlangen-Nurenberg, Germany) have now come one step closer to achieving this goal as they have succeeded in using ultra-short laser impulses to precisely control electrons in graphene. The scientists published their results in Physical Review Letters.
Current control in electronics that is one million times faster than in today’s systems is a dream for many. Ultimately, current control is one of the most important components as it is responsible for data and signal transmission. Controlling the flow of electrons using light waves instead of voltage signals, as is now the case, could make this dream a reality. However, up to now, it has been difficult to control the flow of electrons in metals as metals reflect light waves and the electrons inside them cannot be influenced by these light waves.
Location data beamed from GPS satellites are used by smartphones, car navigation systems, the microchip in your dog’s neck and guided missiles — and all those satellites are controlled by the U.S. Air Force. That makes the Chinese government uncomfortable, so it’s developing an alternative that a U.S. security analyst calls one of the largest space programs the country has undertaken.
The Beidou Navigation System will be accessible worldwide by 2020.
Scientists from around the world are meeting in Sydney to discuss the latest advancements in silicon quantum computing.
Scientists from around the world are landing in Sydney this week to join discussions on the latest research in silicon quantum computing with renowned physicist and Australian of the Year, Professor Michelle Simmons, and UNSW Sydney researchers from the Centre of Excellence for Quantum Computation and Communication Technology (CQCT), including Professor Andrew Dzurak, Professor Sven Rogge and Professor Andrea Morello.
Bringing together more than 200 leading researchers in the field, the Silicon Quantum Electronics Workshop is a global initiative to share research insights and technology advancements in the race to build the world’s first quantum computer – in silicon.
The Future of Classical Computing (Heterogeneous Architecture – CPUs, GPUs, FPGAs, ASICs,…) https://www.facebook.com/singularityprosperity/videos/440265…prosperity
In this video, we’ll be discussing what heterogeneous system architecture is and how it is going to shape the future of classical computing!
[0:27–6:40] Starting off we’ll look at, what heterogeneous system architecture (HSA) is and two new types of computing devices, FPGAs & ASICs.
Microchips could be implanted into employees of UK firms to track worker efficiencies.
