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.
CITATION STYLE
Holbrow, C. H., Lloyd, J. N., & Amato, J. C. (1999). The Heisenberg Uncertainty Principle. In Modern Introductory Physics (pp. 407–423). Springer New York. https://doi.org/10.1007/978-1-4757-3078-4_15
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