Full coherent control of nuclear spins in an optically pumped single quantum dot

Arxiv – Full coherent control of nuclear spins in an optically pumped single quantum dot The interaction between electron and nuclear spins in quantum dots is often seen as detrimental for the use of electron spin for quantum information processing. It is now shown, however, that such interaction can be used to coherently control the …

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A few days after Steve Jobs retires – Apple is the most valuable company in the world

Apple has ended the trading day as the most valuable company in the world. Apple has a market capitalization of 355.61 Billion Exxon Mobil is valued at $353 billion As everyone knows Steve Jobs retired as CEO and is now Chairman of Apple. Some think that Apple could start to use more of its $28 …

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High Energy Microwave Cannon for Disabling Cars and Improvised Explosive Devices Has been Field Tested

Eureka Aerospace has a high energy microwave cannon for stopping cars Eureka Aerospace’s current High-Power Electromagnetic System (HPEMS) uses a compact, tunable power source and a high-gain antenna to beam microwave energy in the direction of targeted vehicles. Once emitted, these electromagnetic waves bring vehicles to a halt by inducing strong disabling currents in their …

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Shattering Traditional Notions of Laser Limits With A Working Plasmonic Laser

Air Force Office of Scientific Research and National Science Foundation-funded professor, Dr. Xiang Zhang has demonstrated at the University of California, Berkeley the world’s smallest semiconductor laser, which may have applications to the Air Force in communications, computing and bio-hazard detection. The semiconductor, called a plasmon, can focus light the size of a single protein …

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Sematech : Leading Ways to Continue Moore’s Law

During a presentation on June 26, 2009 chip-making consortium Sematech outlined ways to enable Moore’s Law Sematech also warned about a gap in Extreme Ultra-violet mask inspection tools. To enable EUV in mass production fabs, IC makers must get their hands on defect-free photomasks. Today’s EUV masks have 1 defect per cm^2 at 18-nm. The …

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Small and Expensive Versus Big and Possibly Infrequent Space Launch

Hobby space and and Transterrestrial (Rand Simberg) are indicating that A. because the current market for space payloads is small then no big dumb rockets should be built. B. Some commenters say we can just leverage in space resources (ISRU – in space resource utilization) and make do with small payloads. C. Another commenter said, …

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