  Noncommutative phase space plays an essential role in particle physics and
quantum gravity at the Planck scale. However, direct experimental evidence or
observation to demonstrate the existence of noncommutative phase space is still
lacking.We study a quantum ring in noncommutative phase space based on the
Seiberg-Witten map and give the effective magnetic potential and field coming
from the noncommutative phase space, which induces the persistent current in
the ring. We introduce two variables as two signatures to detect the
noncommutative phase space and propose an experimental scheme to detect the
noncommutative phase space as long as we measure the persistent current and the
external magnetic flux.
