  The black hole information paradox is a long-standing problem in theoretical
physics. Despite some recent progress, many issues remain open and should be
clarified. In this paper, we study the information paradox of Kerr black holes
and propose a new resolution with precise physical meanings. We compute the
time-dependent Hawking radiation rate during the Kerr black hole evaporation
using both the gravity and the conformal field theory approaches. Based on the
consistent result from both approaches, we formulate the information paradox on
top of the time evolution of the entanglement entropy between a Kerr black hole
and its Hawking radiation quanta. To resolve the information paradox, we
carefully keep track of the ingoing Hawking quanta through the Kerr black hole
as a quantum wormhole and microscopically derive the Page curve as a time-delay
effect. The result matches the previously obtained semi-classical Page curve
and has a natural interpretation in quantum information theory.
