Most lasers emit photons of exactly the same wavelength, producing a single color. However, there are also lasers that consist of many frequencies, with equal intervals in between, as in the teeth of a comb; thus, they are referred to as “frequency combs.” Frequency combs are perfect for detecting a variety of chemical substances. At

A terahertz laser designed by MIT researchers is the first to reach three key performance goals at once—high constant power, tight beam pattern, and broad electric frequency tuning—and could thus be valuable for a wide range of applications in chemical sensing and imaging. The optimized laser can be used to detect interstellar elements in an

How atoms arrange themselves at the smallest scale was thought to follow a ‘drum-skin’ rule, but mathematicians have now found a simpler solution. Atomic arrangements in different materials can provide a lot of information about the properties of materials, and what the potential is for altering what they can be used for. However, where two

Australian scientists have investigated new directions to scale up qubits—utilising the spin-orbit coupling of atom qubits—adding a new suite of tools to the armory. Spin-orbit coupling, the coupling of the qubits’ orbital and spin degree of freedom, allows the manipulation of the qubit via electric, rather than magnetic-fields. Using the electric dipole coupling between qubits

High-temperature superconductors have the potential to transform everything from electricity transmission and power generation to transportation. The materials, in which electron pairs travel without friction—meaning no energy is lost as they move—could dramatically improve the energy efficiency of electrical systems. Understanding how electrons move through these complex materials could ultimately help researchers design superconductors that

A new collaborative study led by a research team at the Department of Energy’s Pacific Northwest National Laboratory, University of California, Los Angeles and the University of Washington could provide engineers new design rules for creating microelectronics, membranes and tissues, and open up better production methods for new materials. At the same time, the research,

The production of chlorofluorocarbons, which damage the ozone layer, has been banned as far as possible. However, other substances can also tear holes in the ozone layer in combination with ice particles, such as those found in clouds. Researchers at Ruhr-Universität Bochum, the University of Duisburg-Essen and Friedrich-Alexander-Universität Erlangen-Nürnberg have discovered a possible mechanism for

In the world of quantum computing, interaction is everything. For computers to work at all, bits—the ones and zeros that make up digital information—must be able to interact and hand off data for processing. The same goes for the quantum bits, or qubits, that make up quantum computers. But that interaction creates a problem—in any

Scientists mapping out the quantum characteristics of superconductors—materials that conduct electricity with no energy loss—have entered a new regime. Using newly connected tools named OASIS at the U.S. Department of Energy’s Brookhaven National Laboratory, they’ve uncovered previously inaccessible details of the “phase diagram” of one of the most commonly studied “high-temperature” superconductors. The newly mapped

Researchers from Intel Corp. and the University of California, Berkeley, are looking beyond current transistor technology and preparing the way for a new type of memory and logic circuit that could someday be in every computer on the planet. In a paper appearing online Dec. 3 in advance of publication in the journal Nature, the

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