Quantum Leap is an American television series created by Donald Bellisario. The series was broadcast from 1989 to 1993 on NBC. This show follows the adventures of a time-traveling scientist (Sam) as he "leaps" through different events from the 1950s to the 1980s.
The Quantum Leap logo's font is quite close to Swiss Cheesed, which was created by Glyphobet Font Foundry. The font is free for both personal and commercial use and comes in 84 characters. You can download the font in the Fonts Used Section.