Agilent has oscilloscopes to 63 GHz /160GS/s. How is that possible?

CrossRoads:
Need to use something faster than an Arduino 8)

Nothing a little liquid nitrogen and a faster crystal can't fix. 8)

I realize I should have posted these links:

First thing I buy if I win the Powerball:

http://www.home.agilent.com/en/pd-2108888-pn-DSAX96204Q/infiniium-high-performance-oscilloscope-63-ghz?nid=-33202.1010838&cc=US&lc=eng

TI's obscenely fast converter:

http://www.ti.com/product/lm97600