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Mathematical breakthrough sets out rules for more effective teleportation

New protocol advances solutions for more efficient teleportation – the transport of quantum information at the speed of light.
For the last ten years, theoretical physicists have shown that the intense connections generated between particles as established in the quantum law of ‘entanglement’ may hold the key to eventual teleportation of information.
Now, for the first time, researchers have worked out how entanglement could be ‘recycled’ to increase the efficiency of these connections. Published in the journal Physical Review Letters, the result could conceivably take us a step closer to sci-fi style teleportation in the future, although this research is purely theoretical in nature.
The team have also devised a generalised form of teleportation, which allows for a wide variety of potential applications in quantum physics.
Once considered impossible, in 1993 a team of scientists calculated that teleportation could work in principle using quantum laws. Quantum teleportation harnesses the ‘entanglement’ law to transmit particle-sized bites of information across potentially vast distances in an instant.
Entanglement involves a pair of quantum particles such as electrons or protons that are intrinsically bound together, retaining synchronisation between the two that holds whether the particles are next to each other or on opposing sides of a galaxy. Through this connection, quantum bits of information – qubits – can be relayed using only traditional forms of classical communication.
Previous teleportation protocols have fallen into one of two camps, those that could only send scrambled information requiring correction by the receiver or, more recently, “port-based” teleportation that doesn’t require a correction, but needs an impractical amount of entanglement – as each object sent would destroy the entangled state.

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Quantum Physicists Have Successfully Teleported A Qutrit For The Very First Time

Quantum teleportation has been a term related to qubits for the longest time and recently, researchers have successfully teleported ‘qutrits’. The research published on American Physical Society is a major breakthrough that will propel the quantum computation prowess to incredibly faster speeds.

Scientists have been able to teleport qubits, Quantum Bits of information that have binary states – 0 or 1 – but qutrits have three possible states – 0, 1 and 2. Qubits and qutrits have the property of being able to exist in multiple states at the same time, i.e. superposition which allows for amazing applications in quantum computing.

Quantum Teleportation is based on quantum entanglement, through which the properties of a quantum particle can be transferred to a distant particle without physical movement of the particle itself. It is nothing like the ‘Warp Speed’ or ‘Warp Drive’ that has been popularized in sci-fi but rather, it is just two interlinked particles revealing the properties of the other particle. Quantum teleportation is possible by using photons which carry the quantum information about the two possible states in case of qubits or three possible states as in qutrits.

Splitting the photon into three beams through the use of an intricate contraption consisting of calibrated setup of lasers, beam splitters and barium boratecrystals, the researcher created their qutrits. They also said that it could be possible to use ququarts in the future. With 0.75 fidelity over 12 states of entanglement, the researchers were able to prove that qutrit teleportation is possible.

The research will surely propel the quantum technology to the next level as quantum teleportation is an integral part of quantum computing applications.

Source mashable.com

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“Thousands of Solar Reflector Satellites” Could Warm Up Mars

Space Retreat

Since 2015, SpaceX CEO Elon Musk has made it abundantly clear that he really wants to nuke Mars in order to terraform it — and, presumably, turn it into a habitable space retreat for billionaires.

But he might have a plan B up his sleeve that wouldn’t risk turning the Red Planet into a gigantic planet-sized Chernobyl.

“Might make sense to have thousands of solar reflector satellites to warm Mars versus artificial suns,” Musk tweeted on Tuesday. Then he added, cautiously: “TBD.”

Martian Mirrors

That idea might not be as crazy as it sounds: using orbital mirrors to terraform Mars was suggested by University of Arizona undergrad Rigel Woida back in 2006 — a suggestion that won him a NASA fellowship at the time.

According to Woida’s paper from 2007, the idea was to have a “network of two to three hundred, 150 meter diameter reflectors in monolith form or a series of small clustered groups” to warm the Martian surface.

Artificial Suns

Musk also elaborated on his Plan A — “nuke Mars” — on Twitter: drop a “continuous stream of very low fallout nuclear fusion explosions above the atmosphere to create artificial suns.” After all, the Sun is technically an “immense thermonuclear explosion” itself, as he explained last week.

But for that to ever happen, NASA would have to change its stance on the matter. Just over a year ago, NASA research found that nuking Mars wouldn’t be enough to turn it into an Earth-like holiday destination.

READ MORE: Elon Musk ponders solar reflectors instead of nuking Mars to warm it up [CNET]

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We Have a Cure for the Deadliest Form of Tuberculosis

The Food and Drug Administration just approved the third and final part of a new drug regimen shown to cure the deadliest strain of tuberculosis.

The regimen involves taking five pills every day for six months straight, but that’s nothing compared to the existing treatment, which requires 40 daily pills for two years, according to The New York Times. And in a small clinical trial, the new treatment was shown to cure the rare, deadly XDR strain of tuberculosis in 90 percent of people, suggesting that the disease could soon become much more manageable.

Tuberculosis is still a major problem in a large chunk of the world. The disease is the most common infectious cause of death on Earth, the NYT writes, and the XDR strain had already built up a resistance to all four types of antibiotics that doctors currently use to treat it.

Ten million people catch XDR tuberculosis every year. Three-quarters of those people die before they get any treatment, per the NYT, and existing cures only worked on just over a third of the remainders.

The new treatment requires three separate drugs, the newest of which just got FDA approval. Gerald Friedland, one of the scientists who discovered the XDR strain told the NYT that he thought the recent experiment was “a wonderful trial.”

“If this works as well as it seems to,” he said, “we need to do this now.”

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