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Archive for the ‘time travel’ category: Page 8

Dec 13, 2015

Computing with time travel?

Posted by in categories: computing, quantum physics, time travel

Why send a message back in time, but lock it so that no one can ever read the contents? Because it may be the key to solving currently intractable problems. That’s the claim of an international collaboration who have just published a paper in npj Quantum Information.

It turns out that an unopened message can be exceedingly useful. This is true if the experimenter entangles the message with some other system in the laboratory before sending it. Entanglement, a strange effect only possible in the realm of quantum physics, creates correlations between the time-travelling message and the laboratory system. These correlations can fuel a quantum computation.

Around ten years ago researcher Dave Bacon, now at Google, showed that a time-travelling quantum computer could quickly solve a group of problems, known as NP-complete, which mathematicians have lumped together as being hard.

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Dec 11, 2015

Computing with time travel

Posted by in categories: computing, quantum physics, time travel

Why send a message back in time, but lock it so that no one can ever read the contents? Because it may be the key to solving currently intractable problems. That’s the claim of an international collaboration who have just published a paper in npj Quantum Information.

It turns out that an unopened message can be exceedingly useful. This is true if the experimenter entangles the message with some other system in the laboratory before sending it. Entanglement, a strange effect only possible in the realm of , creates correlations between the time-travelling message and the laboratory system. These correlations can fuel a quantum computation.

Around ten years ago researcher Dave Bacon, now at Google, showed that a time-travelling quantum computer could quickly solve a group of problems, known as NP-complete, which mathematicians have lumped together as being hard.

Read more

Dec 3, 2015

Australian Physicists Prove Time Travel is Possible

Posted by in categories: particle physics, quantum physics, time travel

Scientists from the University of Queensland have used photons (single particles of light) to simulate quantum particles travelling through time. The research is cutting edge and the results could be dramatic!

Their research, entitled “Experimental simulation of closed timelike curves “, is published in the latest issue of Nature Communications. The grandfather paradox states that if a time traveler were to go back in time, he could accidentally prevent his grandparents from meeting, and thus prevent his own birth.

However, if he had never been born, he could never have traveled back in time, in the first place. The paradoxes are largely caused by Einstein’s theory of relativity, and the solution to it, the Gödel metric.

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Dec 2, 2015

Using Light To Simulate Time Travel

Posted by in category: time travel

While we can’t build a time machine, we can simulate one with beams of light.

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Dec 1, 2015

Light-Bending Microchip Could Fire Up Quantum Computers

Posted by in categories: computing, quantum physics, time travel

For the first time, scientists have achieved infinite speeds on a microchip. Although this advance will not enable faster-than-light starships, the light-warping technology behind this innovation could lead to new light-based microchips and help enable powerful quantum computers, researchers said.

Light travels at the speed of about 670 million miles per hour (1.08 billion km/h) in a vacuum, and is theoretically the fastest possible speed at which matter or energy can travel. Exceeding this speed limit should lead to impossible results such as time travel, according to Einstein’s theory of relativity.

However, in a way, researchers have overcome this barrier for decades. [Warped Physics: 10 Effects of Faster-Than-Light Travel].

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Nov 27, 2015

Quantum computers: a time-travelling boost

Posted by in categories: computing, quantum physics, time travel

In general relativity, closed timelike curves can break causality with remarkable and unsettling consequences. At the classical level, they induce causal paradoxes disturbing enough to motivate conjectures that explicitly prevent their existence. At the quantum level such problems can be resolved through the Deutschian formalism, however this induces radical benefits—from cloning unknown quantum states to solving problems intractable to quantum computers. Instinctively, one expects these benefits to vanish if causality is respected. Here we show that in harnessing entanglement, we can efficiently solve NP-complete problems and clone arbitrary quantum states—even when all time-travelling systems are completely isolated from the past. Thus, the many defining benefits of Deutschian closed timelike curves can still be harnessed, even when causality is preserved. Our results unveil a subtle interplay between entanglement and general relativity, and significantly improve the potential of probing the radical effects that may exist at the interface between relativity and quantum theory.

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Nov 4, 2015

In This Trippy Short Film, a Man Meets Every Possible Future Version of Himself

Posted by in categories: futurism, time travel

In Therefore I Am, the McCoubrey brothers create a compelling time travel mystery in just six minutes. It leaves you with questions, BUT in a good way.

Therefore I Am tracks a conversation a man has with future versions of himself, each one arriving slightly earlier than the last, each one with slightly different instructions for how to get to that point. You can even trace the loops—each one leads to the next. And yet, not a single one seems to have successfully avoided the event they’re trying to stop.

Continue reading “In This Trippy Short Film, a Man Meets Every Possible Future Version of Himself” »

Oct 24, 2015

REWIND — Cancelled TV show pilot — Time Travel Sci-fi/Action (Promo)

Posted by in categories: entertainment, military, time travel

Interesting pilot. Too bad it was never picked up for a full run.


Cancelled TV pilot of the sci-fi series; REWIND (Series 01 — episode 01)

Continue reading “REWIND — Cancelled TV show pilot — Time Travel Sci-fi/Action (Promo)” »

Oct 24, 2015

Nanotechnology offers new approach to increasing storage ability of dielectric capacitors

Posted by in categories: nanotechnology, time travel

Oct. 21, 2015, was the day that Doc Brown and Marty McFly landed in the future in their DeLorean, with time travel made possible by a “flux capacitor.”

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Oct 22, 2015

Time Travel & The Multiverse – Many Worlds: Many Timelines

Posted by in categories: cosmology, time travel

Excerpt from This Book Is From the Future: A Journey Through Portals, Relativity, Wormholes and Other Adventures in Time Travel by Marie D. Jones & Larry Flaxman.

Time travel has enchanted and intrigued us since the earliest days of fiction, when authors such as H.G. Wells, Samuel Madden, Charles Dickens and Enrique Gaspar y Rimbau stretched and challenged our imaginations with images and tales of men and women who invented amazing machines and devices that could take them back in time, or forward into the future.

Because of the restrictions of light speed, and the paradoxes of going back to the past without damaging the future timeline, and a host of other obstacles and challenges, we, in fact, have remained stuck in the present.

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