8 papers
Overcoming the repeaterless bound in continuous-variable quantum communication without quantum memories
Matthew S. Winnel, Joshua J. Guanzon, Nedasadat Hosseinidehaj +1
One of the main problems in quantum communications is how to achieve high rates at long distances. Quantum repeaters, i.e., untrusted, intermediate relay stations, are necessary to…
Minimization of information leakage in continuous-variable quantum key distribution
Matthew S. Winnel, Nedasadat Hosseinidehaj, Timothy C. Ralph
A communication protocol based on a Gaussian modulation of squeezed states in a single quadrature and measured via homodyne detection can completely eliminate information leakage t…
Quantum repeater for continuous variable entanglement distribution
Josephine Dias, Matthew S. Winnel, Nedasadat Hosseinidehaj +1
Quantum repeaters have been proposed as a way of extending the reach of quantum communication. First generation approaches use entanglement swapping to connect entangled links alon…
Composable finite-size effects in free-space CV-QKD systems
Nedasadat Hosseinidehaj, Nathan Walk, Timothy C. Ralph
Free-space channels provide the possibility of establishing continuous-variable quantum key distribution (CV-QKD) in global communication networks. However, the fluctuating nature…
Generalized quantum scissors for noiseless linear amplification
Matthew S. Winnel, Nedasadat Hosseinidehaj, Timothy C. Ralph
We generalize the concept of optical state truncation and noiseless linear amplification to enable truncation of the Fock-state expansion of an optical state to higher order and to…
Finite-size effects in continuous-variable QKD with Gaussian post-selection
Nedasadat Hosseinidehaj, Andrew M. Lance, Thomas Symul +2
In a continuous-variable quantum key distribution (CV-QKD) protocol, which is based on heterodyne detection at the receiver, the application of a noiseless linear amplifier (NLA) o…