To see such effects, physicists first have to suck out every possible quantum and leave a beam in its least-energetic "ground state".

为了目睹这种效应，物理学家首先需要吸出每一个可能的量子，让光束处于能量最小的“基态”。

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Workers at Ground Zero watch and take pictures as the first beam for the future 9/11 memorial is raised into place September 2, 2008 in New York.

工人在地面零观赏和拍照的第一束未来9月11日纪念地提高到2008年9月2日在纽约举行。

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To reach the ground state, physicists had to cool their beams to nearly absolute zero.They also had to make the quanta as large as possible by making a beam stiffer to increase its frequency.

为了实现真正的基态，物理学家不得不将光束冷却到接近绝对零度，他们还要通过使光束保持静止来增大其频率，让量子尺度变得尽可能大。

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The same approach has been used in ground-based experiments to beam one kilowatt of power over a distance of several kilometres, notes Peter Fisher, a physicist at the Massachusetts Institute of Technology.

ECONOMIST: Monitor

The beam was reported as coming from a sports ground in the Whipton area, on the other side of the M5 motorway from the airport, police said.

BBC: Green laser

Given the risks of aiming such a powerful beam of high-intensity radiation at an Earth ground station, as well as the cost of building billions of dollars in infrastructure to collect the energy in space, the efficiencies you can get from terrestrial solar power seem a safer bet--at least for now.

FORBES: Galactic Gold Mine?