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Quantum benchmarks for the storage or transmission of quantum light from minimal resources
Hauke Häseler, Norbert Lütkenhaus
We investigate several recently published benchmark criteria for storage or transmission of continuous-variable quantum information. A comparison reveals that criteria based on a G…
Derivation and experimental test of fidelity benchmarks for remote preparation of arbitrary qubit states
Nathan Killoran, Devon N. Biggerstaff, Rainer Kaltenbaek +2
Remote state preparation (RSP) is the act of preparing a quantum state at a remote location without actually transmitting the state itself. Using at most two classical bits and a s…
Entanglement verification with realistic measurement devices via squashing operations
Tobias Moroder, Otfried Gühne, Normand J. Beaudry +2
Many protocols and experiments in quantum information science are described in terms of simple measurements on qubits. However, in a real implementation, the exact description is m…
Probing the quantumness of channels with mixed states
Hauke Häseler, Norbert Lütkenhaus
We present an alternative approach to the derivation of benchmarks for quantum channels, such as memory or teleportation channels. Using the concept of effective entanglement and t…
Topological optimization of quantum key distribution networks
Romain Alleaume, Francois Roueff, Eleni Diamanti +1
A Quantum Key Distribution (QKD) network is an infrastructure that allows the realization of the key distribution cryptographic primitive over long distances and at high rates with…
Upper bounds for the secure key rate of decoy state quantum key distribution
Marcos Curty, Tobias Moroder, Xiongfeng Ma +2
The use of decoy states in quantum key distribution (QKD) has provided a method for substantially increasing the secret key rate and distance that can be covered by QKD protocols w…