We consider a Bose-Einstein condensate interacting with a gravitational wave for the case when the gravitational fluctuations are quantized in order to incorporate quantum gravity effects into the theory. Using quantum metrological techniques, we obtain the quantum gravity-modified Fisher information which we term the quantum gravitational Fisher information (QGFI). The inverse square root of the stochastic average of the QGFI gives the minimum uncertainty in the measurement of the amplitude of the gravitational wave. We finally find out that the Bose-Einstein condensate proves to be one of the best candidates for graviton detection and then we have calculated the decoherence rate generated due to the graviton interaction for a maximally entangled BEC system. This proceeding is based on two of our works [1, 2].