A qubit value change monitor is disclosed. An initial qubit value of a qubit in superposition is determined based on a first plurality of readings of the qubit. Subsequent to determining the initial qubit value, a current first qubit value is determined based on a second plurality of readings of the qubit. It is determined that the initial first qubit value differs from the current first qubit value. Responsive to determining that the initial first qubit value differs from the current first qubit value, a changed qubit action is initiated.