Encrypted quantum states can be cloned in arbitrary dimensions by introducing a new unitary operator for encryption and adapting the decryption process.
In this Appendix, we provide the derivation for the qudit identity X (A) d k1 Z (A) d −k2 ⊗X (B) d k1 Z (B) d k2 |Φd⟩=|Φ d⟩,(E1) for any dimensiond≥2 andk 1, k2 ∈ {0,
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Cloning Encrypted Quantum States in Arbitrary Dimensions
Encrypted quantum states can be cloned in arbitrary dimensions by introducing a new unitary operator for encryption and adapting the decryption process.