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        Time-resolved quantum measurements using active detectors

        Author
        Steuernagel, O.
        Rabitz, H.
        Attention
        2299/4106
        Abstract
        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 introduces vacuum modes into the measurement. When active detectors are used, this gives rise to considerable background noise. The same conclusion may be drawn when considering other highly resolved quantum measurements of, e.g., energy, position, etc. Special emphasis is put on the analysis of time-resolved optical homodyne detection as an important example of an active detector.
        Publication date
        1998
        Published in
        Physical Review A
        Published version
        https://doi.org/10.1103/PhysRevA.57.1329
        Other links
        http://hdl.handle.net/2299/4106
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