Comments on "An accurate digital phase measurement scheme"

1985 ◽  
Vol 73 (3) ◽  
pp. 490-491
Author(s):  
J.M. Carr ◽  
T.S. Rathore
Keyword(s):  
Phase Measurement ◽  
Measurement Scheme ◽  
Digital Phase

An accurate digital phase measurement scheme

1984 ◽  
Vol 72 (3) ◽  
pp. 397-398 ◽  
Author(s):  
T.S. Rathore ◽  
L.S. Mombasawala
Keyword(s):  
Phase Measurement ◽  
Measurement Scheme ◽  
Digital Phase

MINIMUM UNCERTAINTY RELATION OBEYED BY SWH PHASE OPERATOR IN TWO-MODE COHERENT STATE

1999 ◽  
Vol 13 (14) ◽  
pp. 463-469 ◽  
Author(s):  
FAN HONGYI ◽  
SUN ZHIHU
Keyword(s):  
Coherent State ◽  
Uncertainty Relation ◽  
Phase Measurement ◽  
Single Mode ◽  
Square Root ◽  
Phase Operator ◽  
Expectation Values ◽  
Measurement Scheme ◽  
Minimum Uncertainty ◽  
Root Operation

We study the minimum uncertainty relation obeyed by the phase operator [Formula: see text] in two-mode coherent state. The operator is suitable for Shapiro–Wagner heterodyne phase measurement scheme. It is due to the |ξ> representation (see Eq. (4)) that the difficulty brought by nonlinear square root operation in [Formula: see text] can be avoided in calculating miscellaneous expectation values. Just as the single-mode coherent state | z1> makes uncertainty relation, satisfied by S–G phase operator, minimum for large |z1|2, we show that |z1,z2> makes uncertainty relation obeyed by [Formula: see text] minimum when |z1|=|z2| is large enough. Some figures are plotted to support our conclusion.

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