  Quantum memories for optical and microwave photons provide key
functionalities in quantum processing and communications. Here we propose a
protocol well adapted to solid state ensemble based memories coupled to
cavities. It is called Stark Echo Modulation Memory (SEMM), and allows large
storage bandwidths and low noise. This is achieved in a echo like sequence
combined with phase shifts induced by small electric fields through the linear
Stark effect. We investigated the protocol for rare earth nuclear spins and
found a high suppression of unwanted collective emissions that is compatible
with single photon level operation. Broadband storage together with high
fidelity for the Stark retrieval process is also demonstrated. SEMM could be
used to store optical or microwave photons in ions and/or spins. This includes
NV centers in diamond and rare earth doped crystals, which are among the most
promising solid-state quantum memories.
