| 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. |
據法新社報道，香港物理學家表示，他們已經證實單個光子遵守愛因斯坦的理論，即沒有任何物體可超越光速。這證明了在科幻小說之外，時間旅行是不可能的。 |
| 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." |
香港科技大學的科研小組由杜勝望帶領，他們表示已證實單個光子，即光的基本粒子“跟一般的電磁波同樣都遵守宇宙交通法則”。 |
| "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." |
杜勝望說：“我們證實了單光子速度不能超越光速，平息了過去有關單光子速度的爭論；從應用層面來看，這項研究結果亦將加深科學家們對量子訊息傳播的理解。” |
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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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該項研究在美國科學期刊《物理評論快報》上發表。 |
