Entanglement engineering of one-photon wave packets using a single-atom source

We propose a cavity-QED scheme for the controlled generation of sequences of entangled single-photon wave packets. A photon is created inside a cavity via an active medium, such as an atom, and decays into the continuum of radiation modes outside the cavity. Subsequent wave packets generated in this way behave as independent logical quantum bits (qubits). This and the possibility of producing maximally entangled multi-qubit states suggest many applications in quantum communication. [S1050-2947(98)51010-4].