Alice and Bob perform the following steps:
- Alice and Bob initially share a Bell State .
- Alice performs a joint measurement upon the qubit she wants to transmit and her half of the Bell State. This measurement may be performed by applying a CNOT between the qubit to be transmitted and the first one on the pair β00 and then applying Hadamard to the first of her two qubits. Measuring both the qubits in the computational basis completes the Bell measurement.
- Alice then sends the results of the measurements on her two qubits (2 classical bits b1,b2) to Bob.
- Bob applies a transformation upon his qubit, according to the two received bits, based on the following table
|Received bits||Gate to be applied|
The complete circuit is the following
where is the qubit to be teleported.
Let's see, let
Therefore, appliyng Bob will obtain the original state .