A collapsed qubit is similar to a classical bit in several key ways:

• Definite State After Measurement: Once a qubit is measured, it collapses from a superposition into a definite state of either |0⟩ or |1⟩, just like a classical bit which can only be 0 or 1 at any given time

• Binary Representation: Both a collapsed qubit and a classical bit represent information in binary form-0 or 1

• Deterministic Value Post-Collapse: After measurement, the qubit’s state is known with certainty, analogous to how a classical bit’s value is definite and known after reading

However, this similarity only applies after the qubit has collapsed due to measurement. Before measurement, qubits differ fundamentally from classical bits because they can exist in superpositions of 0 and 1 simultaneously and can be entangled with other qubits, properties that classical bits do not have

. In summary, a collapsed qubit behaves like a classical bit because it holds a definite binary value after measurement, but unlike classical bits, qubits have unique quantum properties before collapse that enable powerful quantum computations