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Researchers have used a quantum mechanical property to overcome some of the limitations of conventional holograms. The new approach, detailed in Nature Physics, employed quantum entanglement, allowing two photons to become a single “non-local particle.” A series of entangled photon pairs is key to producing new and improved holograms.

Classical holograms work by using a single light beam split into two. One beam is sent towards the object you’re recreating and is reflected onto a special camera. The second beam is sent directly onto the camera. By measuring the differences in light, its phase, you can reconstruct a 3D image. A key property in this is the wave’s coherence.

The quantum hologram shares some of these principles but its execution is very different. It starts by splitting a laser beam in two, but these two beams will not be reunited. The key is in the splitting. As you can see in the image below, the blue laser hits a nonlinear crystal, which creates two beams made of pairs of entangled photons.

In a new study, researchers from Australia and Canada have identified a ‘sweet spot’, using holes, where the qubit is least sensitive to noise.

101 quantum chemistry, how to start.

A wave function is a function defining the quantum state of an isolated system. It is generally represented by ψ(), pronounced [psi].

Sea salps — gelantinous, marine organisms that look like jellyfish — have clogged water systems used to cool nuclear reactors in South Korea, forcing two units offline.

It’s the second time in less than three weeks Korea Hydro & Nuclear Power Co. shut the Hanul No. 1 and No. 2 units, after salps clogged water intake valves. The reactors, which each have a capacity of 950-megawatts, resumed operation last week before shutting again Tuesday.

Physicists may have just made a major breakthrough in our understanding of the Universe.

Summary: Combining artificial intelligence technology with brain scan data, researchers have identified three novel subtypes of multiple sclerosis.

Source: UCL

Scientists at UCL have used artificial intelligence (AI) to identify three new multiple sclerosis (MS) subtypes. Researchers say the groundbreaking findings will help identify those people more likely to have disease progression and help target treatments more effectively.

Many have asked: Is that a rainbow on Mars? No. Rainbows aren’t possible here. Rainbows are created by light reflected off of round water droplets, but there isn’t enough water here to condense, and it’s too cold for liquid water in the atmosphere. This arc is a lens flare.

Delaying, Detecting, Preventing and Treating Aging And Associated Diseases — Dr. Brian Kennedy, Ph.D., National University of Singapore.

Dr. Brian Kennedy is Distinguished Professor, Department of Biochemistry and Physiology, Yong Loo Lin School of Medicine, National University of Singapore (NUS), Director of National University Health System (NUHS) Centre for Healthy Ageing, Singapore, Professor, Buck Institute for Research on Ageing, Adjunct Professor, Leonard Davis School of Gerontology, USC, and Affiliate Faculty, Department of Biochemistry, University of Washington.

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You hear so much about the wonders of coffee, that I decided it was time to even the score.

Tea Is Fantastic.

Continue reading “Tea Is Fantastic — Let’s Hear It For The Humble Cuppa” »