Graphene is a single-atom-thick carbon sheet with extraordinary properties unrivalled by any other known material, 1À7 which will likely lead to a revolution in many areas of technology. 8 It displays linear band dispersion, 9,10 massless Dirac Fermions, 11 and extremely high mobility. 12 Potentially, graphene-based electronics could consist of just one or a few layers of graphene; however, the absence of a band gap presents a conundrum for the implementation of conventional device architectures, similar to those based on semiconducting materials. 13À18 Several methods have been proposed for opening band or transport gaps in graphene, such as patterning single-layer graphene into narrow ribbons, 19 introducing nanoholes into the graphene sheets, 20 applying a perpendicular
With the development of quantum communication technology, Shor’s algorithm is expected to crack RSA encryption. Quantum communication will change the method of classical encryption in the future. We propose a quantum image encryption method via reversible quantum logic gates computing as quantum computing is reversible. An entangled pair of qubits are used for data transmission. The plaintext image is encrypted into an encrypted image via the quantum gate by using superdense coding to encrypt and transmit the operating quantum gate. The encrypted image is decoded by reversible computing, which is expected to provide a way for quantum image encryption.
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