Table 5 Selective QFT parameter.
From: Quantum secure image encryption using hybrid QTRNG and QPRNG
Quantum component | Parameter | Purpose | Explanation | Role in Quantum Encryption |
|---|---|---|---|---|
Hadamard gate | Rotation around Y axis \(\:\left(\frac{\pi\:}{2}\right)\) and X axis (\(\:\pi\:)\) | Creates superposition of basis states | It prepares qubits in equal superposition for quantum parallelism | It converts pixel intensities into frequency components by enabling QFT. |
Controlled Rotation Z gate | \(\:\left(\frac{\pi\:}{2}\right)\) | Applies controlled phase shift for entanglement | It introduces conditional phase rotations to maintain quantum interference | It encodes pixel position-dependent phase shifts that contribute to encryption. To decrypt apply a negative phase shift across the qubit |
