Bending The Heisenberg Uncertainty Principle

The celebrated Heisenberg Uncertainty Principle \Delta x \Delta p\ge \hbar/2 can allow measurement accuracies less than \Delta x or \Delta p. Classical analog of this is known as sub-Fourier sensitivity. We illustrate this phenomenon in a step by step process using the example of compass state, as suggested by Zurek.

Anwar Mohiuddin, Abhijeet K.Jha, Prasanta K.Panigrahi · 2010