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Figure 4 | EPJ Quantum Technology

Figure 4

From: Quantum encryption with quantum permutation pad in IBMQ systems

Figure 4

The Quantum Permutation Pad in the case of ideal fully-quantum permutation will be applied as one pad to plaintetx qubits. For this specific illustration each permutation in the permutation pad acts on 2 qubits simultaneously. Permutation operators are not limited to 2 qubits at a time, however, we depict it for the sake of simplicity without loss of generality using 2-qubits permutations

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