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Figure 3 | EPJ Quantum Technology

Figure 3

From: Quantum encryption with quantum permutation pad in IBMQ systems

Figure 3

The dispatching procedure, in the ideal case, will be performed using quantum gates applied to the plaintext qubits with the secret key qubits set as control qubits. Note that we have not yet determined the optimal way to implement the quantum dispatching procedure, however, it should depend on blocks of secret key qubits and act of blocks of plaintext qubits. Thus, we depict dispatching as quantum gates applied to the blocks of plaintetx qubits with multiple secret key qubits set as constrol. We also believe that the quantum gates used for dispatching are unitary gates. After all, their classical counterparts are simply blocks of secret key converted to integers

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