Qubit and bit-based quantum hybrid secret key generation

For the generation of a hybrid secret key, hardly any quantum algorithms integrating computed qubits and decrypted bits have yet been developed. Integrating computed qubits and decrypted bits in a predetermined order is difficult for a combiner component. The underlying problems of the study are the design of a quantum circuit, an algorithm, base state polarizer setup, and the concatenation of decrypted bits and computed qubits. By combining either rectilinear, orthogonal (superposition), or both states with decrypted bits, we have investigated three different possibilities for the quantum hybrid protocol. We investigated errors in each case and compared them with regard to decoherence and other quantum mechanics properties by taking into consideration the effectiveness of base states during transmission time across an untrusted channel. Furthermore, we addressed the key size, base state errors, design complexity, and security in a reasonable manner for identifying solutions and compared our results to earlier proposed quantum protocols. Finally, our suggested key protocol is more effective than that of earlier proposed protocols.