481 citations · 1.1k across the 27 of their papers we have counts for
8 papers · 1 filter
Restoring broken entanglement by separable correlations
Gaetana Spedalieri, Stefano Pirandola
We consider two bosonic Gaussian channels whose thermal noise is strong enough to break bipartite entanglement. In this scenario, we show how the presence of separable correlations…
Quantum cryptography with an ideal local relay
Gaetana Spedalieri, Carlo Ottaviani, Samuel L. Braunstein +4
We consider two remote parties connected to a relay by two quantum channels. To generate a secret key, they transmit coherent states to the relay, where the states are subject to a…
Cryptographic aspects of quantum reading
Gaetana Spedalieri
Besides achieving secure communication between two spatially-separated parties, another important issue in modern cryptography is related to secure communication in time, i.e., the…
Nonclassical readout of optical memories under local energy constraint
Gaetana Spedalieri, Cosmo Lupo, Stefano Pirandola
Nonclassical states of light play a central role in many quantum information protocols. Their quantum features have been exploited to improve the readout of information from digita…
CV-MDI-QKD: One-mode Gaussian attacks are not enough
Carlo Ottaviani, Gaetana Spedalieri, Samuel L. Braunstein +1
The security proof of continuous variable (CV) measurement device independent (MDI) quantum key distribution (QKD) cannot be reduced to the analysis of one-mode Gaussian attacks (i…
MDI-QKD: Continuous- versus discrete-variables at metropolitan distances
Stefano Pirandola, Carlo Ottaviani, Gaetana Spedalieri +6
In a comment, Xu, Curty, Qi, Qian, and Lo claimed that discrete-variable (DV) measurement device independent (MDI) quantum key distribution (QKD) would compete with its continuous-…