劉鐵虎／綜合報導　澳洲國立大學的一組物理學家今天宣布已將一處的雷射光解體成功，繼而於剎那間，在約一公尺外的另一處重建出來。但他們也表示此一世界性的科學突破尚未及於上市階段。 廣　告

　　帶領研究的林平開（音）博士說，他的小組所研究成功的與科幻片「星艦迷航記」中的人體時空轉移現象非常相似，但想將人體做空間轉移，距離實現的日子還遙遠得很。「理論上沒有什麼阻止我們做這件事，但這個問題的複雜性大得沒人此刻會認真考慮它。」

　　不過他也說，科學能將固體物質在兩個地方做空間轉移為時已不太遠。一九九七年即已開始研究空間轉移的林平開說：「我的預測是……未來三至五年內很可能有人會做出來，就是將單一原子空間轉移成功。」

　　但他說將人體空間轉移幾近不可能，因為我們是由無以計數的原子組成，所以最好忘掉「星艦迷航記」中「企業號」人員走進時空轉移艙、汽化然後在別處重組出來的劇情吧。

　　雷射光束是在「量子糾結」的歷程中被空間轉移而消滅的。所謂「量子糾結」，是指兩個光子接觸時，會發生一種牽引作用，使得兩者互相影響，研究者遂可從它們的整體特性得知個別光子的瞬間特性，克服海森堡的「不確定原理」。

　　這項突破為未來十年研發超快及超安全通訊系統如量子電腦等開啟了巨大可能性。

　　物理學家相信，量子電腦比傳統電腦記憶大得多，因此解決問題的能力比傳統電腦快數百萬倍。

　　ＩＢＭ美國實驗室在一九九三年為空間轉移提供理論基礎後，空間轉移成為過去十年量子力學物理學家最熱門的話題之一。此後全球約有四十間實驗室在此領域進行實驗。

　　儘管加州和丹麥的研究小組最先做空間轉移的初期研究，但澳洲大學的澳、德、法、中、紐五國科學家最先完成信度百分之百的實驗。

　　這項實驗的觀念是，如果量子粒子如電子、離子和原子性質相同，那麼它們基本上便無不同。所以如果組成物體的量子粒子性質在另一粒子團複製出來，便會出現精確的複製品，因此必須傳遞的僅為粒子性質的訊息，而非粒子本身。無法將訊息可靠地傳遞是過去「糾結」實驗的主要絆腳石。

一旦研發出此等科技，軍事意義非同小可，談古論今以求窺探新局，似是件好事啊？

反物質發現幾十年了，威力比核武高
但是也沒人那他來當彈頭，也沒人去研究

如果什麼都要和軍事沾上邊，那我是不是可以把泡麵的製法也貼在軍事版
或是高維宇宙與大爆炸的關係
甚至唐詩三百首也可以拿來討論？

如果有朋友對這種離軍事較遠的議題覺得煩心﹐就請不要發言
若覺得有影響版務的疑慮﹐請在留言版告知小弟

就個人看法﹐這好像又是某惡作據團體的傑作

Scientists Report 'Teleported' Data
Mon Jun 17, 4:33 PM ET
By PETER O'CONNOR, Associated Press Writer

CANBERRA, Australia (AP) - Australian scientists said Monday they had successfully "teleported" a laser beam encoded with data, breaking it up and reconstructing an exact replica a yard away.

Photos

Reuters Photo


Their work replicates an experiment at the California Institute of Technology in 1998, but the Australian team believes their technique is more reliable and consistent.

Although the research brings to mind the way "Star Trek" characters were beamed around on TV and in film, scientists at the Australian National University said their technique's main use will be as a way to encrypt information and for a new generation of super-fast computers.

At this stage, the process perfected by Australian physicist Ping Koy Lam and his 12-member team can only teleport light by destroying the light beam and creating an exact copy at the receiving end from light particles known as photons.

"We have taken a beam of laser light ... and completely destroyed it and then made measurements of the destroyed laser beam and then took the measured results to the other side of the lab and reconstructed an exact replica of what we have destroyed," said Lam.

Teleporting a laser beam involves destroying and replicating billions of photons.

Lam said he believes the process, called "quantum teleportation" and which takes a nanosecond — one billionth of one second — will soon be used for teleporting matter.

"My prediction is if we are not doing it, it will probably be done by someone in the next three to five years, that is the teleportation of a single atom or a small group of atoms," he said.

Teleporting a living person would likely be virtually impossible, scientists said.

"In theory, there is nothing stopping, us but the complexity of the problem is so huge no one is thinking seriously about it at the moment," Lam said.

Quantum teleportation makes use of a strange aspect of quantum physics called the Heisenberg Uncertainty Principle, which says it is impossible to measure both the speed and position of an object at the same time.

The researchers couldn't directly measure the key characteristics of the laser beam they wanted to replicate, so they turned to a process called entanglement. In entanglement, characteristics of tiny particles — like the photons that make up laser beams — can be mirrored in a second set of particles.

So researchers can make their measurements on a second laser beam that was entangled with the first. The measurements are then sent by radio waves to the receiving station, which exactly replicates the first beam that was destroyed in the process of entanglement.

Lam's team will be presenting the results to an international conference on quantum electronics in Moscow next week.

不過有幾個重點請注意
1.scientists at the Australian National University said their technique's main use will be as a way to encrypt information and for a new generation of super-fast computers.

2."We have taken a beam of laser light ... and completely destroyed it and then made measurements of the destroyed laser beam and then took the measured results to the other side of the lab and reconstructed an exact replica of what we have destroyed," said Lam.

Teleporting a laser beam involves destroying and replicating billions of photons.