HK scientists 'show time travel is impossible'

HK scientists 'show time travel is impossible' - Hong Kong physicists say they have proved that a single photon of Einstein's theory that nothing is faster than the speed of light obeys - show that outside of science fiction, time travel is possible.

The Hong Kong University of Science and Technology research team led by Du Shengwang said they had demonstrated that a single photon, or unit of light ", obey the traffic laws of the universe."

"Einstein argued that the speed of light was the traffic laws of the universe, or in simple language, nothing can travel faster than light," the university said on its website.

"Professor Du's study shows that a single photon, the basic light quanta, also obeys the traffic laws of the universe, just like classical EM (electromagnetic) waves."

The possibility of time travel has been increased from 10 years ago when scientists discovered faster than light - or faster than light - propagation of optical pulses in particular medium, the team said.

It was later determined that a visual effect, but researchers thought it could go for a single photon can exceed the speed of light.

But you believed that Einstein was right, and resolved the debate by measuring the ultimate speed of a single photon, which should not be stopped before done.

"The study showed that the single photons and obey the speed limit c, confirms Einstein's causality, that is, an effect can not occur before its cause," said the university.

"By showing that individual photons can not travel faster than the speed of light, our results bring a closure to through out the debate about the true speed of information processing by a single photon," said Du, assistant professor of physics.

"Our results are probably also possible applications of the scientists a better picture on the transmission of quantum information processing."

The team of the study was published in the U.S. peer-reviewed journal Physical Review Letters.