1.4k citations · 3.3k across the 13 of their papers we have counts for
14 papers
Rate limits in quantum networks with lossy repeaters
Riccardo Laurenza, Nathan Walk, Jens Eisert +1
The derivation of ultimate limits to communication over certain quantum repeater networks have provided extremely valuable benchmarks for assessing near-term quantum communication…
Dense coding capacity of a quantum channel
Riccardo Laurenza, Cosmo Lupo, Seth Lloyd +1
We consider the fundamental protocol of dense coding of classical information assuming that noise affects both the forward and backward communication lines between Alice and Bob. A…
Tight bounds for private communication over bosonic Gaussian channels based on teleportation simulation with optimal finite resources
Riccardo Laurenza, Spyros Tserkis, Leonardo Banchi +3
Upper bounds for private communication over quantum channels can be derived by adopting channel simulation, protocol stretching, and relative entropy of entanglement. All these ing…
Conditional channel simulation
Stefano Pirandola, Riccardo Laurenza, Leonardo Banchi
In this work we design a specific simulation tool for quantum channels which is based on the use of a control system. This allows us to simulate an average quantum channel which is…
Fundamental limits to quantum channel discrimination
Stefano Pirandola, Riccardo Laurenza, Cosmo Lupo +1
What is the ultimate performance for discriminating two arbitrary quantum channels acting on a finite-dimensional Hilbert space? Here we address this basic question by deriving a g…
Channel Simulation in Quantum Metrology
Riccardo Laurenza, Cosmo Lupo, Gaetana Spedalieri +2
In this review we discuss how channel simulation can be used to simplify the most general protocols of quantum parameter estimation, where unlimited entanglement and adaptive joint…
Teleportation simulation of bosonic Gaussian channels: Strong and uniform convergence
Stefano Pirandola, Riccardo Laurenza, Samuel L. Braunstein
We consider the Braunstein-Kimble protocol for continuous variable teleportation and its application for the simulation of bosonic channels. We discuss the convergence properties o…
Theory of channel simulation and bounds for private communication
Stefano Pirandola, Samuel L. Braunstein, Riccardo Laurenza +4
We review recent results on the simulation of quantum channels, the reduction of adaptive protocols (teleportation stretching), and the derivation of converse bounds for quantum an…
Modular network for high-rate quantum conferencing
Carlo Ottaviani, Cosmo Lupo, Riccardo Laurenza +1
One of the main open problems in quantum communication is the design of efficient quantum-secured networks. This is a challenging goal, because it requires protocols that guarantee…
Finite-resource teleportation stretching for continuous-variable systems
Riccardo Laurenza, Samuel L. Braunstein, Stefano Pirandola
We show how adaptive protocols of quantum and private communication through bosonic Gaussian channels can be simplified into much easier block versions that involve resource states…
Secret key capacity of the thermal-loss channel: Improving the lower bound
Carlo Ottaviani, Riccardo Laurenza, Thomas P. W. Cope +3
We consider the secret key capacity of the thermal loss channel, which is modeled by a beam splitter mixing an input signal mode with an environmental thermal mode. This capacity i…
General bounds for sender-receiver capacities in multipoint quantum communications
Riccardo Laurenza, Stefano Pirandola
We investigate the maximum rates for transmitting quantum information, distilling entanglement, and distributing secret keys between a sender and a receiver in a multipoint communi…
General Benchmarks for Quantum Repeaters
Stefano Pirandola, Riccardo Laurenza
Using a technique based on quantum teleportation, we simplify the most general adaptive protocols for key distribution, entanglement distillation and quantum communication over a w…
Fundamental Limits of Repeaterless Quantum Communications
Stefano Pirandola, Riccardo Laurenza, Carlo Ottaviani +1
Quantum communications promises reliable transmission of quantum information, efficient distribution of entanglement and generation of completely secure keys. For all these tasks,…