Many-particle entanglement is a fundamental concept of quantum physics that still presents
conceptual challenges. Although nonclassical states of atomic ensembles were used to …

Entanglement is the key quantum resource for improving measurement sensitivity beyond
classical limits. However, the production of entanglement in mesoscopic atomic systems has …

Entanglement between large numbers of quantum modes is the quintessential resource for
future technologies such as the quantum internet. Conventionally, the generation of …

In a continuous variable quantum key distribution (CV-QKD) system, strong Einstein–
Podolsky–Rosen entangled states can significantly boost the robustness and distance for …

Einstein-Podolsky-Rosen (EPR) entangled states can significantly enhance the secret key
rate and secure distance of continuous-variable quantum key distribution (CV-QKD). In …

The inseparability criterion provides a straightforward and efficient method for identifying
and quantifying two-mode Gaussian quantum entanglement, making it a crucial tool in …

Entanglement drives nearly all proposed quantum information technologies. By up-
converting part of a 1550 nm two-mode squeezed vacuum state to 532 nm, we demonstrate …

This book presents theoretical methods and experimental results on the study of multipartite
quantum correlations in spin-squeezed Bose–Einstein condensates. Nonclassical …

The inseparability criterion provides a straightforward and efficient method for identifying
and quantifying two-mode Gaussian quantum entanglement, making it a crucial tool in …

The first description of quantum steering goes back to Schrödinger. In 1935 he named it a
necessary and indispensable feature of quantum mechanics in response to Einstein's …