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Explicit generation of unitary transformations in a single atom or molecule
(2000)
A constructive procedure for generating a prescribed unitary transform via the optically driven evolution of a multilevel atom is described. Assuming a clean separation of the coupled levels, the procedure employs the ...
Spontaneous parametric down-conversion for an arbitrary monochromatic pump beam
(1998)
Signal-idler photon-pairs generated in spontaneous parametric down-conversion are considered for the case of an arbitrary monochromatic pump beam. It is shown that the quantum correlations between the signal and idler ...
Time-resolved quantum measurements using active detectors
(1998)
Time-resolved quantum measurements using active detectors are analyzed. It is shown that the time-resolved observation of a quantum field leads to a mode mismatch between observed field and detection device that unavoidably ...