Quantum researchers able to split one photon into three

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Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo report the first occurrence of directly splitting one photon into three.

 The occurrence, the first of its kind, used the spontaneous parametric down-conversion method (SPDC) in quantum optics and created what quantum optics researchers call a non-Gaussian state of light. A non-Gaussian state of light is considered a critical ingredient to gain a quantum advantage.

“It was understood that there were limits to the type of entanglement generated with the two-photon version, but these results form the basis of an exciting new paradigm of three-photon quantum optics,” said Chris Wilson, a principle investigator at IQC faculty member and a professor of Electrical and Computer Engineering at Waterloo.

“Given that this research brings us past the known ability to split one photon into two entangled daughter photons, we’re optimistic that we’ve opened up a new area of exploration.”

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At 10 trillion frames per second, this camera captures light in slow motion

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Light is the fastest thing in the universe, so trying to catch it on the move is necessarily something of a challenge. We’ve had some success, but a new rig built by Caltech scientists pulls down a mind-boggling 10 trillion frames per second, meaning it can capture light as it travels along — and they have plans to make it a hundred times faster.

Understanding how light moves is fundamental to many fields, so it isn’t just idle curiosity driving the efforts of Jinyang Liang and his colleagues — not that there’d be anything wrong with that either. But there are potential applications in physics, engineering, and medicine that depend heavily on the behavior of light at scales so small, and so short, that they are at the very limit of what can be measured.

You may have heard about billion- and trillion-FPS cameras in the past, but those were likely “streak cameras” that do a bit of cheating to achieve those numbers.

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Scientists discover a way to create matter from light

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Scientists discovered a technique that should produce electrons and positrons by colliding two sets of super-energetic photons.

For a long time, scientists have theorized that you can create matter from light by colliding photons. Proving that theory has been a different story — you need the right high-energy particles to even think of trying. However, it looks like that once-impossible dream is close to becoming reality.

 

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The trillion-frame-per-second video

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Captured light ‘scattering’ below the surfaces of solid objects.

MIT researchers have created a new imaging system that can acquire visual data at a rate of one trillion exposures per second. That’s fast enough to produce a slow-motion video of a burst of light traveling the length of a one-liter bottle, bouncing off the cap and reflecting back to the bottle’s bottom…

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Next Big Power Source? Pulling Electricity Out of Thin Air

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“Hygroelectricity,” meaning “humid electricity” could be the next big power source.

We’re already making great strides at pulling electricity from the motion of the air and from the photons that stream through it, but what about pulling electric charges right out of the air itself? Researchers have solved a mystery about how electricity forms in the atmosphere, and in doing so may have found a way to pull electricity right out of the air.

 

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Raytheon Unveils It’s Anti-Aircraft Laser

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Raytheon’s anti-aircraft laser

American defense firm Raytheon unveiled its anti-aircraft laser, of all places, at an airshow in England. Called the Laser Close-In Weapon System, Raytheon said the 50 kilowatt beam it produces can be used against aircraft, mortars, rockets, and small surface ships, and has already been tested against unmanned aerial vehicles. (Video)

 

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Teleportation Achieved Over 10 Miles

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Quantum teleportation won’t be transporting Kirk and his Away Team to the surface of some distant planet anytime soon, but it has seriously practical applications to communications.

Quantum teleportation has achieved a new milestone or, should we say, a new ten-milestone: scientists have recently had success teleporting information between photons over a free space distance of nearly ten miles, an unprecedented length. The researchers who have accomplished this feat note that this brings us closer to communicating information without needing a traditional signal, and that the ten miles they have reached could span the distance between the surface of the earth and space.

 

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Thinnest Nanolaser Developed Key To Future Optical Technologies

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Researchers have created the tiniest laser since its invention nearly 50 years ago

Developed by a consortium of researchers, dubbed the “spaser”, it is the thinnest laser ever developed. About 44 nanometers in diameter and about 10 times smaller than the wavelength of light, the nanolaser could pave way for superfast computers, which use light to process data instead of electrons currently used. This novel invention that emits visible light, has been brought about by harnessing clouds of electrons called “surface Plasmons,“ which produce photons of light waves.

 

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Vision Could Be Improved By Injecting Semiconductor Specks Into Retinas

Vision Could Be Improved By Injecting Semiconductor Specks Into Retinas 

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The idea of creating a bionic eye to assist people with seriously impaired vision is definitely exciting. But installing a silicon chip into a human eyeball to assist the retinas has some drawbacks, the least of which being that the chip itself can block light from falling on areas of the retina that are healthy and still working properly. So Jeffrey Olsen at the University of Colorado Hospital has come up with a different approach.

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Quantum Cryptography – Latest Technology To Protect Information

Quantum Cryptography - Latest Technology To Protect Information 

Quantum cryptography seems to be the latest technology that might help in protecting people’s information. The technique depends on Heisenberg’s uncertainty principle, which states that it is impossible to measure at the subatomic level without altering it. So, when a QC system sends a message in 0 and 1 format, and if someone tries to eavesdrop, the message structure changes and the recipient can detect the tampering. The message, which is sent in the form of a photon beam, doesn’t encode the message but only contains the key for the actual message, and the recipient later uses the key, which is shared by the sender to encode the message.

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