TITLE: "Teleportation of Quantum Fields and the Laser Quantum State"

 

ABSTRACT: This talk covers two loosely connected topics unified by the theme of entanglement in quantum mechanics and its interpretation. The first deals with the teleportation of quantum fields. Three treatments of broadband continuous variable teleportation are presented: (i) within stochastic electrodynamics, (ii) within quantum trajectory theory, and (iii) with an operator-based treatment of the classical channel; their strengths and weaknesses are compared, and, using (iii) high, fidelity teleportation of resonance fluorescence is demonstrated. The second topic follows from the assertion [Rudolf and Sanders, PRL 87, 077903 (2001)] that genuine continuous variable teleportation cannot be achieved using conventional laser sources because intrinsic optical coherence does not exist [Moelmer, PRA 55, 3195 (1997)]. It is argued in opposition to Moelmer---"optical coherences may be regarded as a convenient fiction"---that optical coherence is far more fact than fiction.