Search results for quantum dots:
Researchers Suggest Quantum Dots as Media for Teleportation
Jun 21, 2007 |
4.3 / 5 (136) |
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According to recent research, tiny clusters of atoms known as quantum dots may be excellent media for quantum teleportation, a physics phenomenon in which information – in the form of a quantum state, a very specific mathematical ...
Quantum dots self-tune their color for ultra-efficient nano lasers
Apr 14, 2006 |
4.3 / 5 (129) |
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The laser, one of the most valuable scientific instruments, is getting smaller and more efficient. Scientists have designed a miniature laser, whose nanoscale dimensions and low optical losses will be instrumental ...
Quantum Dots May Lead to Rainbow Solar Cell
Nanotechnology / Nanomaterials
Mar 07, 2008 |
4.6 / 5 (118) |
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For the first time, researchers have created solar cells made of different-sized quantum dots, each tuned to a specific wavelength of light. By arranging these quantum dots in an ordered pattern, the scientists ...
Ultra-Fast Quantum-Dot Information Storage
Mar 21, 2008 |
4.7 / 5 (95) |
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The information-storage market is dominated by two main types: Flash memory, used in memory sticks and cell phones, and dynamic random access memory (DRAM), which is the main memory in a personal computer. Both types have ...
Ultrafast quantum computer uses optically controlled electrons
Aug 15, 2007 |
4.6 / 5 (91) |
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Scientists have designed a scheme to create one of the fastest quantum computers to date using light pulses to rotate electron spins, which serve as quantum bits. This technique improves the overall clock ...
IBM Research Unveils Breakthrough In Solar Farm Technology
May 15, 2008 |
4.7 / 5 (88) |
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IBM today announced a research breakthrough in photovoltaics technology that could significantly reduce the cost of harnessing the Sun's power for electricity.
Silicon Light Bulbs to Compete with Fluorescent Bulbs
Mar 06, 2008 |
4.6 / 5 (76) |
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Thomas Edison invented the light bulb in 1880, and, since the 1920s, the incandescent light bulb has remained largely unchanged. While that's a testament to Edison's ingenuity, it's also a bulb that uses up ...
Scientists make single-photon sources brighter
Dec 12, 2007 |
4.6 / 5 (72) |
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Scientists have achieved a major advance in developing a single-photon light source, bringing quantum applications such as quantum computing and quantum cryptography closer to reality.
Novel nano-etched cavity makes leds 7 times brighter
Nanotechnology / Nanomaterials
Jul 20, 2006 |
4.3 / 5 (73) |
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Researchers at the National Institute of Standards and Technology have made semiconductor light-emitting diodes (LEDs) more than seven times brighter by etching nanoscale grooves in a surrounding cavity to ...
New Nanomaterial, 'NanoBuds,' Combines Fullerenes and Nanotubes
Nanotechnology / Nanomaterials
Mar 30, 2007 |
4.4 / 5 (65) |
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Researchers have created a hybrid carbon nanomaterial that merges single-walled carbon nanotubes and spherical carbon-atom cages called fullerenes. The new structures, dubbed NanoBuds because they resemble ...
Scientists tailor light waves to desired frequencies
Jun 14, 2007 |
4.6 / 5 (62) |
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The ability to control light is vital for many of today’s technologies, most notably in communications and advanced computing. For example, by using materials from mirrors to nanoparticles, scientists can ...
Quantum computers take step toward practicality with demonstration of new device
May 09, 2008 |
4.5 / 5 (63) |
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Computers based on the powerful properties of quantum mechanics have the potential to revolutionize information technology and security, but for decades they have remained more theoretical than practical, ...
A Quantum (Computer) Step: Study Shows It's Feasible to Read Data Stored as Nuclear 'Spins'
Nov 19, 2006 |
4.3 / 5 (65) |
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A University of Utah physicist took a step toward developing a superfast computer based on the weird reality of quantum physics by showing it is feasible to read data stored in the form of the magnetic "spins" ...
Atomic Coilgun Halts Supersonic Beams
Mar 17, 2008 |
4.5 / 5 (63) |
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By magnetically pulsing a sequence of 64 copper coils in an “atomic coilgun,” scientists have succeeded in stopping a supersonic neon beam in its tracks in just microseconds.
Single-photon source may meet the needs of quantum communication systems
Nov 09, 2006 |
3.2 / 5 (85) |
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One of the largest challenges for building quantum communications networks involves having single photons, which are needed to ensure the security and efficiency of quantum systems. With an adequate supply ...
