We show that communication of single-photon quantum states in a multi-user environment is improved by using
spread spectrum communication techniques. We describe a framework for spreading, transmitting, despreading,
and detecting single-photon spectral states that mimics conventional spread spectrum techniques. We show in
the cases of inadvertent detection, unintentional interference, and multi-user management, that quantum spread
spectrum communications may minimize receiver errors by managing quantum channel access.