Error-Disturbance Uncertainty Relations in Neutron-Spin Measurements

Figure 6

Results of error and disturbance plotted as versus . Blue curve: the Branciard bound as defined in (6). Blue marker: experimental results using the modified apparatus for and , as defined in (10). Orange curve error and disturbance as in (9). Green curve: bound imposed by Heisenberg’s original error-disturbance relation , which is violated by our experimental results. Red curve: Ozawa’s relation (5), which is indeed satisfied but is not saturated.