Newcomers to quantum computing learn that the states of individual qubits can be represented graphically with Bloch Spheres. And although these unit spheres have x, y, and z axes (called bases), we learn that we can only measure the z basis. Therefore, we can determine the probabilities of measuring a 0 or a 1, giving us the latitude if we think of the sphere as a globe, but we cannot determine the longitude, or the east-west position around the globe.

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