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Multiple choice
For
M
M
M
independent measurements of a parameter with quantum Fisher information
F
Q
F_Q
F
Q
per shot, the Cramér–Rao bound on the standard deviation is
1
/
M
F
Q
1 / \sqrt{M F_Q}
1/
M
F
Q
. With
M
=
100
M = 100
M
=
100
and
F
Q
=
1
F_Q = 1
F
Q
=
1
, what is the smallest achievable standard deviation?
1.0
0.1
0.01
0.316
Check answer