In today Internet era, confidential information transmitted over an insecure channel. With the
significant development in the area of quantum computing, there is a need for unconditional …

High-dimensional quantum key distribution (QKD) offers secure communication with key
rates that surpass those of QKD protocols utilizing two-dimensional encoding. However …

Quantum Key Distribution (QKD) is an approach for establishing symmetrical binary keys
between distant users in an information-theoretically secure way. In this paper we provide …

This chapter is devoted to the discrete variable (DV) QKD protocols and represents the
continuation of Chap. 6. The chapter starts with the description of BB84 and decoy-state …

This study evaluates the performance of a secure ground‐to‐satellite free‐space optical
(FSO) system using a bipolar pulse amplitude modulation over modulated gamma fading …

High-dimensional quantum key distribution (QKD) offers secure communication, with secure
key rates that surpass those achievable by QKD protocols utilizing two-dimensional …

This chapter is devoted to QKD fundamentals. The chapter starts with description of key
differences between conventional cryptography, classical physical-layer security (PLS), and …

A common model of quantum computing is the gate model with binary basis states. Here, we
consider the gate model of quantum computing with a non-binary radix resulting in more …

This work proposes an encoding–decoding procedure, which is characterized with higher
efficiency, ie, it increases the size of the sifted key. The contribution comes from using a …

Quantum information processing and communication techniques rely heavily upon
entangled quantum states, and this dependence motivates the development of methods and …