Quantum leap is an Isekai. Getting home is a mainstay of the "Summoned Hero" genre of isekai.
Anime examples include:
The Rising of the Shield Hero
My Status as the Assassin Obviously Exceeds the Hero's
My Instant Death Ability Is So Overpowered, No One In This Other World Stands A Chance Against Me!
Arifureta: From Commonplace to World's Strongest
Non anime example: Black Knight