  In this paper, different from the other existing methods that only the
special and limited numbers of qubits transmit between Alice and Bob, a general
method is proposed to implement Bidirectional Quantum Controlled/uncontrolled
Teleportation (BQCT/BQT) that Alice and Bob can transmit each type of arbitrary
n and m-qubits to each other, simultaneously. This protocol is based on
Controlled-NOT (CNOT) operation, appropriate single-qubit unitary operations
and single-qubit measurement in the Z-basis and X-basis. Also, the quantum
channel can be created by using Hadamard and CNOT operations. One of the
advantages of this method is using the single-qubit measurements which are more
efficient than two-qubit measurements.
