2.3 - Encoding Negative Integer Numbers with Quantum States

The lecture slides are available here Download here.

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These slides discuss the representation of negative integers in quantum computing using the two's complement method, a widely used technique in classical computing.

In this binary representation, half of the possible values are assigned to negative numbers and half to positive numbers for a given number of bits. For example, we can represent integers from -4 to +3 in a three-bit register.

The two's complement can also be applied to quantum registers by inverting all bits and then adding 1 to the result (increment operator).