So they started experimenting with a crystal that had some erbium in it.

所以他们开一种含有铒的晶体。

More recently erbium is used as an amplifier of light as it's transmitted down optical fibres.

近年来，铒被用作光放大器，当光通过光纤传输时。

This is designated Ytterby Mine, a historical landmark for the discovery of four periodic elements: yttrium, terbium, erbium, and ytterbium.

这是指定的伊特比矿，是发现四种周元素的历史地标：钇、铽、铒和镱。

Erbium is a rare earth metal, and a crystal with erbium ions in it can work on a wavelength that matches fiber optic cables, but it can only store quantum information for short bursts.

铒是一种稀土金属，其中含有铒离子的晶体可以在与光纤电缆相匹配的波长上工作， 但它只能存储的量子信息。

Yes it's very important, I had heard about it in lectures but when we videoed our first video about erbium I had completely forgotten about this, although without it nobody would have seen any of our videos.

是的，这非常重要。 我曾在讲座中听说过，但在我们首次拍摄关于铒的视频时， 我完全忘记了这一点，尽管没有它， 我们的任何视频都不会有人看到。