Suppose we have two qubits in the state �α|00⟩+β|11⟩.
(a) If we measure the fi�rst qubit in the sign basis, what is the probability of seeing a +?
(b) What is the resulting state of the second qubit in that case?
a) 1/2
b)a,b
(a) If we measure the fi�rst qubit in the sign basis, what is the probability of seeing a +?
(b) What is the resulting state of the second qubit in that case?
b)a,b