rubidium

Saying that the observations of photon behavior in a cloud of atomized rubidium near absolute-zero equal inventing a lightsaber is completely absurd.

For less tha the price of a mid range rolex you can also buy a rubidium atomic oscillator.

Also you can get fairly cheap rubidium clocks from ebay that tend to output around 10MHz for fairly cheap.

So what did they do, some sort of parallel universe transistor where the rubidium atom acts as the gate?

The majority of GPS satellites do not have one rubidium clock on board, they have four.

The phase noise (really short term stability) of a rubidium oscillator is rather poor compared to on ovenized quartz oscillator.

In fact, you can grab 10MHz rubidium standards for a very (relatively) cheap price off eBay.

Maybe your dekstops/servers come with rubidium standards, but the rest of us have crappy crystals.

You can buy your own: rubidium standards sell for less than $300 on ebay.

There is a good reason why GSM base stations all run off rubidium standards.

Helium can cause similar issues when it diffuses through glass enclosures of rubidium standards.

Normal ocean water has potassium and rubidium radionuclides that run to 11Bq/L.

As soon as you are above $1000/€800 or so for a name-brand 8-ch in/out converter, I claim that you will not be able to measure any difference to a >€5000 2ch "32-bit, 192kHz, Mastering AD/DA with rubidium clock".

Note that this lightsaber would require the user (and his/her opponent) to be submerged in supercooled Rubidium.

Rubidium clocks aren't magically perfect at all timescales.

It's fun to realise how massively the early approaches (salinity, heat transfer considerations, etc.) were blown out of the water by good old nuclear decay (Rubidium->Strontium, as I recall).