The midfielder was presented to fans and media on Monday after signing a three-year contract.
"I have come here to win everything," he told reporters.
"This is a big step up from Bayern Munich. I hope to make a contribution and help my teammates to win all the titles.
"We will prepare to exceed expectations with maximum confidence."
The name of the game for Vidal is trophies with every opportunity to lift silverware on offer being of the utmost importance to his time in Catalonia.
"For me, this is the best team in the world.
"I come hungry to win many important trophies, I hope we win each of them in these next three years.
"I am here to leave everything on the pitch."