The objective of this technique is to transmit one qubit between Alice and Bob by sending two classical bits. However, Alice and Bob must initially share one entangled state.

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 β
_{00}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
*b*_{1},*b*_{2}) 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 |

00 | I |

01 | X |

10 | Z |

11 | ZX |

The complete circuit is the following

where is the qubit to be teleported.

Let's see, let

then

Therefore, appliyng Bob will obtain the original state .

## References

- Extracted and translated from the following text: Charlas Introductorias a la Computación Cuántica by Alejandro Díaz-Caro
- Caltech Teleportation Experiment from Kimble Lab
- Teleportation page from IBM Quantum Group