  The complex interactions between orbital angular momentum (OAM) light and
atoms are particularly intriguing in the areas of quantum optics and quantum
information science. Building a versatile high-dimensional quantum network
needs broad spiral-bandwidth for preparing higher-quanta OAM mode and resolving
the bandwidth mismatch in spatial space and etc. Here, we experimentally
demonstrate a broad spiral-bandwidth quantum interface between photon and
memory. Through twisted fields of the writing and reading, the correlated OAM
distribution between photon and memory is significantly broadened. This broad
spiral-bandwidth quantum interface could be spanned in multiplexing regime and
could work in high-quanta scenario with capability of |l|=30, and we
demonstrate the entanglement within 2-D subspace with a fidelity of
80.5\text{\textpm}4.8\% for high l. Such state-of-the-art technology to freely
control the spatial distribution of OAM memory is very helpful to construct
high-dimensional quantum networks and provides a benchmark in the field of
actively developing methods to engineer OAM single photon from matters.
