154 citations
2 papers
quant-ph2005★ 154 cited
Optimal phase measurements with pure Gaussian states
Alex Monras
We analyze the Heisenberg limit on phase estimation for Gaussian states. In the analysis, no reference to a phase operator is made. We prove that the squeezed vacuum state is the m…
hep-ex2005
On the nature of new baryon state X(2000) observed in the experiments with the SPHINX spectrometer
L. G. Landsberg
In the experiment with the SPHINX spectrometer in 1995-99 a new baryon state X(2000) -> Sigma^0K^+ was observed in the proton diffractive reactions p + N(C) -> Sigma^0K^+ + N(C). T…