Proposal for optical transistor uses light to control light
Physicists show that superfluid light is possible
Turning loss to gain: Cutting power could dramatically boost laser output
Lasers – devices that deliver beams of highly organized light – are so deeply integrated into modern technology that their basic operations would seem well understood. CD players, medical diagnostics ...
Laser sniffs out toxic gases from afar
Scientists have developed a way to sniff out tiny amounts of toxic gases—a whiff of nerve gas, for example, or a hint of a chemical spill—from up to one kilometer away.
Vertical cavity quantum switch could lead us away from electronics-based computing
Through a Sensor, Holographically
'Cloaking' device uses ordinary lenses to hide objects across continuous range of angles
Inspired perhaps by Harry Potter's invisibility cloak, scientists have recently developed several ways—some simple and some involving new technologies—to hide objects from view. The latest effort, developed ...
Ever tried a 'laser delicious' apple?
The ability to detect when to harvest "climacteric" fruits—such as apples, bananas, pears and tomatoes—at the precise moment to ensure "peak edibleness" in terms of both taste and texture may soon be ...
New material gives visible light an infinite wavelength
Researchers from the FOM Institute AMOLF and the University of Pennsylvania have fabricated a material which gives visible light a nearly infinite wavelength. The new metamaterial is made by stacking silver ...
Do-it-yourself invisibility with 3-D printing
Seven years ago, Duke University engineers demonstrated the first working invisibility cloak in complex laboratory experiments. Now it appears creating a simple cloak has become a lot simpler.
Three's a charm: NIST detectors reveal entangled photon triplets
Researchers at the University of Waterloo in Canada have directly entangled three photons in the most technologically useful state for the first time, thanks in part to superfast, super-efficient single-photon ...
Improving imaging of cancerous tissues by reversing time
As a child, it was fascinating to put a flashlight up to our palms to see the light shine through the hand. Washington University in St. Louis engineers are using a similar idea to track movement inside the ...
Quantum algorithm breakthrough
An international research group led by scientists from the University of Bristol, UK, and the University of Queensland, Australia, has demonstrated a quantum algorithm that performs a true calculation for the first time. ...
Physicists build first 500 GHz photon switch
The work took nearly four years to complete and it opens a fundamentally new direction in photonics – with far-reaching potential consequences for the control of photons in optical fiber channels.