Stargate
Time travel

How you do it?
TEMPERATURE
HOT OR COLD

What it do?
Cold
Absolute Zero Kelvin
-273 deg
Stuff happens
Energy vibrates so so slow
Waves begin to congregate
Then merge into one
Different sate of energy forms
Only happens at this cold temperature
Absolute Zero Kelvin.

Cold a portal.
Light matter realm into dark matter realm.

What you use to do it!
QUNTUM COMPUTER
Cooled to almost absolute zero using Helium 3.