Quantum Cooling to Near Absolute Zero

How Cold Can They Go?

Earlier this year, the record for coldest temperature achieved in a lab was broken by Stanford, who reached a temperature of 50 picoKelvin (50 trillionths of a kelvin).
Stanford Temperature Record

Using Quantum Mechanics to cool Helium

Although records are always interesting, sometimes techniques to improve an existing cooling method can be fascinating as well. In the video below, a Professor does a great job explaining how his group uses quantum mechanical tricks to cool liquid helium much further than you would normally expect.

Liquid Helium Cooling