
"regarding your QUANTUM guidance system,
provisional patent 62/295118."
The Big Bang Theory Season 9, Episode 24

Quantum physics
makes me so happy.
The Big Bang Theory Season 5, Episode 20

And since it's in a QUANTUM state,
it would maintain an infinite persistence.
The Big Bang Theory Season 9, Episode 16

What about loop QUANTUM gravity?
The Big Bang Theory Season 7, Episode 20