Luogo: Dipartimento di Matematica, via Sommarive, 14 - Povo (TN) - Aula Seminari Ore 14.00
Davide Pastorello(Università degli Studi di Trento)
One of the most prominent practical applications of quantum information theory is quantum cryptography. Principles of quantum mechanics can be exploited to create secure communication channels that are feasible with current technology. In particular, properties of unitary time evolution of quantum systems can be applied to define quantum cryptographic protocols. Quantum dynamics can be exploited as a data encryption/decryption procedure by means of timed measurement processes, implementation of an open-loop control scheme over transmitted qubits increases robustness of a protocol employing this principle. In this talk I will introduce the theoretical foundation of a new cryptographic protocol based on controlled quantum dynamics, I will discuss its unconditional security and I will give some hints about physical realization.