This tutorial reviews the Holevo capacity limit as a universal tool to analyze the ultimate
transmission rates in a variety of optical communication scenarios, ranging from …

We review recent advancements in the domain of Joint Detection Receivers and
Entanglement-Assisted Data transmission links with an emphasis on their potential use in …

The standardisation of 5G is reaching its end, and the networks have started being
deployed. Thus, 6G architecture is under study and design, to define the characteristics and …

Optical communication technology can be enhanced by using quantum signals to transfer
classical bits. This requires the message-carrying signals to interact coherently at the …

We consider all-optical networks from a quantum perspective. We show that optimal
quantum receivers allow a decrease in energy consumption of all-optical amplifiers …

The discrimination of two nonorthogonal states is a fundamental element for secure and
efficient communication. Quantum measurements of nonorthogonal coherent states can …

Quantum state discrimination is a central problem in quantum measurement theory, with
applications spanning from quantum communication to computation. Typical measurement …

Measurements approaching the ultimate quantum limits of sensitivity are central in quantum
information processing, quantum metrology, and communication. Quantum measurements …

Optical links can achieve spectral efficiencies beyond the Shannon limit by employing
quantum joint detection receivers that decode messages collectively. We introduce a novel …

Bit-transmission can be enhanced by the use of quantum detection techniques, realizing a
joint-detection receiver (JDR) that is able to decode transmitted signals via a collective …