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Robust quantum data locking from phase modulation
Cosmo Lupo, Mark M. Wilde, Seth Lloyd
Quantum data locking is a unique quantum phenomenon that allows a relatively short key to (un)lock an arbitrarily long message encoded in a quantum state, in such a way that an eav…
Quantum reading capacity under thermal and correlated noise
Cosmo Lupo, Stefano Pirandola, Vittorio Giovannetti +1
Quantum communication theory sets the maximum rates at which information can be encoded and decoded reliably given the physical properties of the information carriers. Here we cons…
Quantum enigma machines and the locking capacity of a quantum channel
Saikat Guha, Patrick Hayden, Hari Krovi +5
The locking effect is a phenomenon which is unique to quantum information theory and represents one of the strongest separations between the classical and quantum theories of infor…
Noise to lubricate qubit transfer in a spin network
Morteza Rafiee, Cosmo Lupo, Stefano Mancini
We consider quantum state transfer in a fully connected spin network, in which the results indicate that it is impossible to achieve high fidelity by free dynamics. However, the ad…