Electronics at the speed of light

Illustration of how electrons can be imagined to move between two arms of a metallic nanoantenna, driven by a single-cycle light wave. Credit: University of Konstanz

A European team of researchers including physicists from the University of Konstanz has found a way of transporting electrons at times below the femtosecond range by manipulating them with light. This could have major implications for the future of data processing and computing.

Contemporary electronic components, which are traditionally based on silicon semiconductor technology, can be switched on or off within picoseconds (i.e. 10-12 seconds). Standard mobile phones and computers work at maximum frequencies of several gigahertz (1 GHz = 109 Hz) while individual transistors can approach one terahertz (1 THz = 1012Hz). Further increasing the speed at which electronic switching devices can be opened or closed using the standard technology has since proven a challenge. A recent series of experiments—conducted at the University of Konstanz and reported in a recent publication in Nature Physics—demonstrates that electrons can be induced to move at sub-femtosecond speeds, i.e. faster than 10-15 seconds, by manipulating them with tailored .

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Quantum Leaps, Long Assumed to Be Instantaneous, Take Time






When quantum mechanics was first developed a century ago as a theory for understanding the atomic-scale world, one of its key concepts was so radical, bold and counter-intuitive that it passed into popular language: the “quantum leap.” Purists might object that the common habit of applying this term to a big change misses the point that jumps between two quantum states are typically tiny, which is precisely why they weren’t noticed sooner. But the real point is that they’re sudden. So sudden, in fact, that many of the pioneers of quantum mechanics assumed they were instantaneous.

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Quantum Teleportation Enters the Real World







Two separate teams of scientists have taken quantum teleportation from the lab into the real world. Researchers working in Calgary, Canada and Hefei, China, used existing fiber optics networks to transmit small units of information across cities via quantum entanglement — Einstein’s “spooky action at a distance.”Stepping Outside the LabAccording to quantum mechanics, some objects, like photons or electrons, can be entangled.

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How Aging Affects Mitochondria in Brain Cells and Contributes to Age-Related Diseases






By Dr. Mercola

In recent years, it’s become increasingly apparent that most of what we refer to as health and disease really links back to the function of your mitochondria — tiny organelles inside your cells that play an important role in the production of adenosine triphosphate (ATP), required for all biological functions. If your mitochondria are not functioning well, your risk for chronic degenerative diseases will radically increase. Not surprisingly, optimization of mitochondria is also vital for life extension strategies.

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