TY - JOUR
T1 - Time-resolved quantum measurements using active detectors
AU - Steuernagel, Ole
AU - Rabitz, Herschel
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1998
Y1 - 1998
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0032000543&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032000543&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.57.1329
DO - 10.1103/PhysRevA.57.1329
M3 - Article
AN - SCOPUS:0032000543
SN - 1050-2947
VL - 57
SP - 1329
EP - 1332
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
ER -