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Very nice; Silicon based Quantum Laser has been achieved. Imagine what this does for ISPs and other communications. smile

A team of researchers from across the country, led by Alexander Spott, University of California, Santa Barbara, USA, have built the first quantum cascade laser on silicon. The advance may have applications that span from chemical bond spectroscopy and gas sensing, to astronomy and free-space communications.

Integrating lasers directly on chips is challenging, but it is much more efficient and compact than coupling external light to the chips. The indirect bandgap of silicon makes it difficult to build a laser out of silicon, but diode lasers can be built with III-V materials such as InP or GaAs. By directly bonding an III-V layer on top of the silicon wafer and then using the III-V layers to generate gain for the laser, this same group has integrated a multiple quantum well laser on silicon that operates at 2 µm. Limitations in diode lasers prevent going to longer wavelengths where there are many more applications, so the group turned their attention to using quantum cascade lasers instead.

Building a on silicon was a challenging task made more difficult by the fact that becomes heavily absorptive at longer wavelengths in the mid-infrared.

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Quantum physics has a reputation for being mysterious and mathematically challenging. That makes it all the more surprising that a new technique to detect quantum behaviour relies on a familiar tool: a “zip” program you might have installed on your computer.

“We found a new way to see a difference between the quantum universe and a classical one, using nothing more complex than a compression program,” says Dagomir Kaszlikowski, a Principal Investigator at the Centre for Quantum Technologies (CQT).

Dag worked with other researchers from CQT and collaborators at the Jagiellonian University and Adam Mickiewicz University in Poland to show that compression software, applied to experimental data, can reveal when a system crosses the boundary of our classical picture of the Universe into the quantum realm. The work is published in the March issue of New Journal of Physics (“Probing the quantum–classical boundary with compression software”).

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Swarms of graphene-coated nanobots could be our best hope yet of cleaning up the murky oceans, with scientists demonstrating that new microscopic underwater warriors can remove up to 95 percent of lead in wastewater in just 1 hour.

The invention couldn’t have come at a better time, with ocean pollution at an all-time high, much of it stemming from industrial activities such as electronics manufacturing. By 2050, it’s estimated that there will be more plastic than fish in the world’s oceans, and waste metals such as lead, arsenic, mercury, cadmium, and chromium are affecting the delicate ecological balance that will make things very difficult for any animal that relies on it for food — including humans — in the near future.

Developed by an international team of researchers, the newly developed nanobots have three key components: a graphene oxide exterior to absorb lead (or another heavy metal); a nickel core that enables researchers to control the nanobots’ movement via a magnetic field; and an inner platinum coating that functions as an engine and propels the bots forward via a chemical reaction with hydrogen peroxide.

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The pace of progress in computers has been accelerating, and today, computers and networks are in nearly every industry and home across the world.

Many observers first noticed this acceleration with the advent of modern microchips, but as Ray Kurzweil wrote in his book The Singularity Is Near, we can find a number of eerily similar trends in other areas too.

According to Kurzweil’s law of accelerating returns, technological progress is moving ahead at an exponential rate, especially in information technologies.

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Nice and long overdue; however, finally happening and that’s good as long as security and safety are not compromised.

PENTAGON: One of the most important — and most maligned — elements of the Pentagon bureaucracy has gotten 30 percent faster, according to data exclusively compiled for Breaking Defense by the staff of the Joint Requirements Oversight Council. In a new drive for openness, the infamously opaque JROC is also bringing in outside expertise from industry, military laboratories and the Defense Department’s in-house disruptive innovators at DARPA.

Reforming the Joint Requirements Oversight Council is a big deal. The military’s weapons-buying bureaucracy is a maze, and at the dark heart of the labyrinth lurks the JROC, which must approve the official wish list — the requirements — for almost any major program. Led by the vice-chairman of the Joint Chiefs, Gen. Paul Selva, and comprising the No. 2 officers of each service, supported by lesser boards and lower-ranking working groups, the JROC has a reputation for delaying, watering down, or killing the armed services’ proposals. Many believe it’s where good ideas go to die — slowly.

JROC processing time

Continue reading “JROC Speeds Up & Opens Up: Reforming The Dark Heart of Acquisition” | >

A new generation of muon telescopes has been built to detect the presence of secret structures and cavities in Egypt’s pyramids, a team of researchers announced on Friday.

Built by CEA (French Alternative Energies and Atomic Energy Commission) the devices add to an armory of innovative, non-destructive technologies employed to investigate four pyramids which are more than 4,500 years old. They include the Great Pyramid, Khafre or Chephren at Giza, the Bent pyramid and the Red pyramid at Dahshur.

The project, called ScanPyramids, is scheduled to last one year and is being carried out by a team from Cairo University’s Faculty of Engineering and the Paris-based non-profit organization Heritage, Innovation and Preservation (HIP Institute) under the authority of the Egyptian Ministry of Antiquities.

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