Write4U replied to the topic What's all this about a quantum computing breathrough? in the forum Science and Technology 2 days, 13 hours ago
I believe there are several types of superposition, each filling a distinct function
a) Linear superposition, which yield a “sum” of both superposed values
b) Quantum superposition, which yields a selection from two possible states.
Another example is a quantum logical qubit state, as used in quantum information processing, which is a quantum superposition of the “basis states” |0> and |1>.
Here |0> is the Dirac notation for the quantum state that will always give the result 0 when converted to classical logic by a measurement. Likewise |1> is the state that will always convert to 1. Contrary to a classical bit that can only be in the state corresponding to 0 or the state corresponding to 1, a qubit may be in a superposition of both states.
This means that the probabilities of measuring 0 or 1 for a qubit are in general neither 0.0 nor 1.0, and multiple measurements made on qubits in identical states will not always give the same result.