Metamaterial absorbers have been widely studied and continuously concerned owing to
their excellent resonance features of ultra‐thin thickness, light‐weight, and high absorbance …

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 …

A central goal of any quantum technology consists in demonstrating an advantage in their
performance compared to the best possible classical implementation. A quantum radar …

Quantum illumination (QI) and quantum radar have emerged as potentially groundbreaking
technologies, leveraging the principles of quantum mechanics to revolutionise the field of …

Critical quantum systems are a promising resource for quantum metrology applications, due
to the diverging susceptibility developed in proximity of phase transitions. Here, we assess …

Entangled microwave photons form a fundamental resource for quantum information
processing and sensing with continuous variables. We use a low-loss Josephson …

We propose a hetero-homodyne receiver for quantum illumination (QI) target detection.
Unlike prior QI receivers, it uses a cascaded positive operator-valued measurement (POVM) …

Lossy bosonic channels play an important role in a number of quantum information tasks,
since they well approximate thermal dissipation in an experiment. Here, we characterize …

We propose a quantum-enhanced lidar system to estimate a target's radial velocity, which
employs squeezed and frequency-entangled signal and idler beams. We compare its …

Quantum illumination is the task of determining the presence of an object in a noisy
environment. We determine the optimal continuous-variable states for quantum illumination …