Date: Monday, March 12

Presenter: Dr. Howard Carmichael
Host: Dr. Michael Raymer

Joint Teleportation of Quantum Fields and the Laser Quantum State

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)]. I argue in opposition to Moelmer---"optical coherences may be regarded as a convenient fiction"---that 
optical coherence is far more fact than fiction.