Atsushi Nishizawa, Kouji Nakamura, Masa-Katsu Fujimoto
We study the weak-value amplification (WVA) in a phase measurement with an
optical interferometer in which shot noise limits the sensitivity. We compute
the signal and the shot noise including the full-order interaction terms of the
WVA, and show that the shot-noise contribution to a phase shift in a pointer
variable is always larger than the final variance of the pointer variable. To
clarify an advantage for practical uses of the WVA, we discuss signal-to-noise
ratio and its optimization in the presence of the shot noise.
View original:
http://arxiv.org/abs/1201.6039
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