Precision Measurement of the Position-Space Wave Functions of Gravitationally Bound Ultracold Neutrons

Figure 5

Black crosses show measured neutron position distribution [15]. Modulated distribution was clearly measured. The result shows good agreement with the quantum expectation calculated using phase space formalization by Wigner distribution ( value is 0.715). The best estimated line is shown by a red solid curve and the other lines indicate contributions of each state to the distribution. For definitions of fitting parameters, best fit values, systematic uncertainties, and the other details, see [15].