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

于他们开始用一种含有的晶体进行实验。

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

这被指定为伊特比矿场，发现四种周期表元素——、、和镱的历史地标。

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.

的，这非常重要， 我之前在讲座中，但在我们拍摄第一段关于的视频时， 我完全忘记了这一点，尽管没有它， 没有人会看到我们的任何视频。

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.

一种稀土金属，含有离子的晶体可以在与光纤电缆匹配的波长上工作， 但它只能短时间存储量子信息。

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

最近，被用作光纤中传输光信号的放大器。