Recent research offers a new spin on using nanoscale semiconductor structures to build faster computers and electronics. Literally. Researchers have revealed a new method that better preserves the units necessary to power lightning-fast electronics, known as qubits. Hole spins, rather than electron spins, can keep quantum bits in the same physical state up to 10 times longer than before, the report finds.
Futurists have long proclaimed the coming of a cashless society, where dollar bills and plastic cards are replaced by fingerprint and retina scanners. What they probably didn't see coming was its debut not in Silicon Valley but at a small state college in remote western South Dakota. Two shops on the campus are performing one of the world's first experiments in “biocryptology”, a mix of biometrics—using physical traits for identification—and cryptology—the study of encoding private information.
You may not be a disease detective, but now you can play one at home. The nation's public health agency has released a free app for the iPad called "Solve the Outbreak." It allows users to run through fictional outbreaks and make decisions: Do you quarantine the village? Talk to people who are sick?
Society's increasing technology use and data consumption is causing an information bottleneck, congesting airwave frequencies and sending engineers searching for access to higher capacity bandwidths. Until now, no technology has existed to tap into and successfully use these frequencies, which span 30 to 100 GHz.
University of Utah engineers demonstrated it is feasible to build the first organic materials that conduct electricity on their edges, but act as an insulator inside. These materials, called organic topological insulators, could shuttle information at the speed of light in quantum computers and other high-speed electronic devices.
Wireless communications and optical computing could soon get a significant boost in speed, thanks to “slow light” and specialized metamaterials through which it travels. Researchers have made the first demonstration of rapidly switching on and off “slow light” in specially designed materials at room temperature. This work opens the possibility to design novel, chip-scale, ultrafast devices for applications in terahertz wireless communications and all-optical computing.
Scientists have long dreamed of creating a quantum computer—a device rooted in the bizarre phenomena that transpire at the level of the very small, where quantum mechanics rules the scene. It is believed that such new computers could process currently unsolvable problems in seconds. Researchers have tried using various quantum systems, such as atoms or ions, as the basic, transistor-like units in simple quantum computation devices. Now Caltech researchers are laying the groundwork for an on-chip optical quantum network.
A material that could enable faster memory chips and more efficient batteries can switch between high and low ionic conductivity states much faster than previously thought, SLAC National Accelerator Laboratory and Stanford University researchers have determined. The key is to use extremely small chunks of it.
It may not be as popular as Angry Birds, but the Corrosion iPhone app developed by University of Toronto engineering student Jason Tam is finding a grateful audience among professional engineers and engineering students.
Sea Launch AG says a U.S. communications satellite was lost after a booster rocket carrying it into space failed shortly after its launch from a floating platform in the Pacific. The company said in a statement Friday the Intelsat 27 satellite was lost 40 seconds after the launch due to the failure of the Zenit-3SL rocket.
Researchers in Japan and Germany have recently demonstrated a device that can focus and steer terahertz beams electrically. Based on an array of metal cantilevers which can be micromechanically actuated by electrostatic forces, the device can create tunable gratings that may be crucial in future terahertz wavelength communication systems.
Cuba apparently has finally switched on the first undersea fiber-optic cable linking it to the outside world nearly two years after its arrival, according to analysis by a company that monitors global Internet use. In a report posted Sunday on the website of Renesys, author Doug Madory wrote that Cuba began using the ALBA-1 cable on Jan. 14.
In early 2011, a pair of theoretical computer scientists at Massachusetts Institute of Technology proposed an optical experiment that would harness the weird laws of quantum mechanics to perform a computation impossible on conventional computers. The experiment involves generating individual photons—particles of light—and synchronizing their passage through a maze of optical components so that they reach a battery of photon detectors at the same time.
A research team at the Georgia Tech Research Institute (GTRI) is developing an airborne testing capability for sensors, communications devices, and other airborne payloads. This aerial test bed, called the GTRI Airborne Unmanned Sensor System (GAUSS), is based on an unmanned aerial vehicle made by Griffon Aerospace and modified by GTRI.
Researchers from Massachusetts Institute of Technology have developed a 4,096-emitter array that fits on a single silicon chip. Chips that can steer beams of light could enable a wide range of applications, including cheaper, more efficient, and smaller laser rangefinders; medical-imaging devices that can be threaded through tiny blood vessels; and even holographic televisions that emit different information when seen from different viewing angles.
Where do we come from? What is the universe made of? Will the universe exist only for a finite time or will it last forever? These are just some of the questions that University of California, San Diego physicists are working to answer in the high desert of northern Chile.
Communicating with light may soon get a lot easier, hints recent research from NIST and the University of Maryland's Joint Quantum Institute (JQI), where scientists have potentially found a way to overcome a longstanding barrier to cleaner signals.
At a time when communication networks are scrambling for ways to transmit more data over limited bandwidth, a type of twisted light wave is gaining new attention. Called an optical vortex or vortex beam, this complex beam resembles a corkscrew, with waves that rotate as they travel. Now, applied physicists at the Harvard University have created a new device that enables a conventional optical detector—which would normally only measure the light's intensity—to pick up on that rotation.
The U.S. Defense Advanced Research Projects Agency (DARPA) recently selected Southwest Research Institute to provide the flight low-rate crosslink wireless communications platform for the System F6 Program.
Researchers tracked traffic in Boston and San Francisco with cell tower and GPS data and analyzed bottlenecks. Their computer analysis suggested a possible strategy for relieving traffic tie-ups: Instead of asking all drivers to reduce their driving during commute hours, target those communities whose drivers contribute most to congestion.
The field of metamaterials involves augmenting materials with specially designed patterns, enabling those materials to manipulate electromagnetic waves and fields in previously impossible ways. Now, researchers from the University of Pennsylvania have come up with a theory for moving this phenomenon onto the quantum scale, laying out blueprints for materials where electrons have nearly zero effective mass.
Are you allergic to peanuts and worried there might be some in that cookie? Now you can find out using a rather unlikely source: your cell phone. A team of researchers from the University of California, Los Angeles has developed a lightweight device called the iTube, which attaches to a common cell phone to detect allergens in food samples.
A secret agent is racing against time. He knows a bomb is nearby. He rounds a corner, spots a pile of suspicious boxes in the alleyway, and pulls out his cell phone. As he scans it over the packages, their contents appear onscreen. In the nick of time, his handy smartphone application reveals an explosive device, and the agent saves the day. Sound far-fetched? In fact it is a real possibility, thanks to tiny inexpensive silicon microchips developed at the California Institute of Technology.
If you think having your phone identify the nearest bus stop is cool, wait until it identifies your mood. New research by a team of engineers at the University of Rochester may soon make that possible.
Tornado-like vortexes can be produced in bizarre fluids that are controlled by quantum mechanics, completely unlike normal liquids. New research demonstrates how massed ranks of these quantum twisters line up in rows, and paves the way for engineering quantum circuits and chips measuring motion ultra-precisely.