Cold atoms are one promising platform to realize quantum memories with high efficiency. In our experiment we propose to use cold atoms trapped in a 1D lattice. The density modulation of the atoms creates a band gap and a Bragg reflection. Adding this to a standard quantum-memory protocol, we want to study how the increased density of state at the band edges can enhance the efficiency of the quantum memory, and how the Bragg reflection can be exploited to create two output ports for reading the stored light.