TY - JOUR
T1 - Adaptive quantum measurements of a continuously varying phase
AU - Berry, D. W.
AU - Wiseman, H. M.
N1 - Copyright 2002 by The American Physical Society. Reprinted from Physical review A.
PY - 2002
Y1 - 2002
N2 - The quantum-limited estimation of stochastically varying phase of a continuous beam of the electromagnetic field was analyzed. Both nonadaptive and adaptive measurements, and dyne detection (using a local oscillator) and interferometric detection were considered. For the case of dyne detection, a coherent beam resulted with phase invariance≅N-1/2/2, which was √2 times smaller than that achieved by nonadaptive detection. For a squeezed beam, variance scaling was N-2/3 compared to N-1/2 for heterodyne detection.
AB - The quantum-limited estimation of stochastically varying phase of a continuous beam of the electromagnetic field was analyzed. Both nonadaptive and adaptive measurements, and dyne detection (using a local oscillator) and interferometric detection were considered. For the case of dyne detection, a coherent beam resulted with phase invariance≅N-1/2/2, which was √2 times smaller than that achieved by nonadaptive detection. For a squeezed beam, variance scaling was N-2/3 compared to N-1/2 for heterodyne detection.
UR - http://www.scopus.com/inward/record.url?scp=0036541325&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.65.043803
DO - 10.1103/PhysRevA.65.043803
M3 - Article
AN - SCOPUS:0036541325
SN - 1050-2947
VL - 65
SP - 1
EP - 11
JO - Physical Review A. Atomic, Molecular, and Optical Physics
JF - Physical Review A. Atomic, Molecular, and Optical Physics
IS - 4
M1 - 043803
ER -