At present, there is no scientific evidence or theoretical framework to suggest that teleportation can be used to achieve faster-than-light travel or travel at the speed of light. Teleportation, as it is commonly understood, involves the instantaneous transportation of an object or a person from one location to another without traversing the space in between.
According to our current understanding of physics, the speed of light in a vacuum, approximately 299,792,458 meters per second, is an absolute speed limit. It represents the maximum speed at which information or matter can travel through space. The theory of relativity, proposed by Albert Einstein, is a fundamental framework in physics that supports this limit.
Teleportation, as portrayed in science fiction, often involves the complete dematerialization of an object or person at one location and its recreation at another location. This process would require capturing and encoding the precise quantum state or arrangement of every particle in the object or person, transmitting that information, and then recreating the object or person with the same quantum state at the destination. However, even if such technology were possible, it would not overcome the fundamental limitation imposed by the speed of light.
While scientific advancements may bring new insights and discoveries in the future, there is no scientific basis to suggest that teleportation can be used to achieve faster-than-light or light-speed travel.