Communication security has to evolve to a higher plane in the face of the threat from the
massive computing power of the emerging quantum computers. Quantum secure direct …

Quantum secure direct communication (QSDC) leverages quantum states to transmit
information securely and reliably over a noisy, lossy, and wiretapped quantum channel. It …

The recent advances in quantum information processing, sensing, and communications are
surveyed with the objective of identifying the associated knowledge gaps and formulating a …

Measurement-device-independent quantum secure direct communication (MDI-QSDC)
protocol is capable of defending against attacks on detectors by illegal parties, and its …

The security of prepare-and-measure satellite-based quantum key distribution (QKD), under
restricted eavesdropping scenarios, is addressed. We particularly consider cases where the …

We analyze theoretically optimal operation of an optical key distribution (OKD) link based on
fine intensity modulation of an optical signal transmitted over an attenuating channel to a …

We assume information is discrete-modulated over coherent states of the single-mode
electromagnetic field and transmitted over space quantum channels. In this letter, we …

With the increasing demand for secure communication in optical space networks, it is
essential to develop physical-layer scalable security solutions. In this context, we present the …

Abstract Quantum Key Distribution allows two parties to establish a secret key that is secure
against computationally unbounded adversaries. To extend the distance between parties …

Quantum key distribution is costly and, at the moment, offers low performance in space
applications. Other more recent protocols could offer a potential practical solution to this …