| Hong Kong physicists say they have proved that a single photon obeys Einstein's theory that nothing can travel faster than the speed of light -- demonstrating that outside science fiction, time travel is impossible, AFP reports. |
据法新社报道，香港物理学家表示，他们已经证实单个光子遵守爱因斯坦的理论，即没有任何物体可超越光速。这证明了在科幻小说之外，时间旅行是不可能的。 |
| The Hong Kong University of Science and Technology research team led by Du Shengwang said they had proved that a single photon, or unit of light, "obeys the traffic law of the universe just like classical EM (electromagnetic) waves." |
香港科技大学的科研小组由杜胜望带领，他们表示已证实单个光子，即光的基本粒子“跟一般的电磁波同样都遵守宇宙交通法则”。 |
| "By showing that single photons cannot travel faster than the speed of light, our results bring a closure to the debate on the true speed of information carried by a single photon," Du said. "Our findings will also likely have potential applications by giving scientists a better picture on the transmission of quantum information." |
杜胜望说：“我们证实了单光子速度不能超越光速，平息了过去有关单光子速度的争论；从应用层面来看，这项研究结果亦将加深科学家们对量子讯息传播的理解。” |
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The study was published in the U.S. scientific journal Physical Review Letters.
(China.org.cn July 26, 2011)
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该项研究在美国科学期刊《物理评论快报》上发表。 |
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