We propose a cavity-QED scheme for the controlled generation of sequen
ces of entangled single-photon wave packets. A photon is created insid
e a cavity via an active medium, such as an atom, and decays into the
continuum of radiation modes outside the cavity. Subsequent wave packe
ts generated in this way behave as independent logical quantum bits (q
ubits). This and the possibility of producing maximally entangled mult
i-qubit states suggest many applications in quantum communication. [S1
050-2947(98)51010-4].