An international team of researchers led out of Macquarie University has demonstrated a new approach for converting ordinary laser light into genuine quantum light.
The mesosphere, at heights between 85 and 100 kilometers above the Earth's surface, contains a layer of atomic sodium. Astronomers use laser beams to create artificial stars, or laser guide stars (LGS), in this layer for improving the quality of astronomical observations.
One of the key concepts in quantum physics is entanglement, in which two or more quantum systems become so inextricably linked that their collective state can’t be determined by observing each element individually. Now Yale researchers have developed a “universal entangler” that can link a variety of encoded particles on demand.
The laser is the perfect light source: when being provided with energy, it generates light of a specific, well-defined colour. It is also possible, however, to create the exact opposite – an object that perfectly absorbs light of a particular colour and dissipates the energy almost completely.
In our day lives, we can find many examples of manipulation of reflected waves such as mirrors to see our reflections or reflective surfaces for sound that improve auditorium acoustics. When a wave impinges on a reflective surface with a certain angle of incidence and the energy is sent back, the angle of reflection is equal to the angle of incidence.
Researchers at Duke University have discovered that a perfect absorber of electromagnetic waves they described in a 2017 paper can easily be tweaked into a sort of “time-reversed laser” known as a coherent perfect absorber (CPA).
In information technology, multiplexing schemes are used to transmit more signals than the number of available transmission channels.
Rice University researchers have added a new dimension to their breakthrough technique that expands the capabilities of standard laboratory microscopes.
For the first time, researchers have demonstrated a way to map and measure large-scale photonic quantum correlation with single-photon sensitivity. The ability to measure thousands of instances of quantum correlation is critical for making photon-based quantum computing practical.
FISBA will exhibit optical components and system solutions for defense and security applications at SPIE Defense and Commercial Sensing 2018.
|
|
|
|
|
|
|
|
|