Photons have been a flagship system for studying quantum mechanics, advancing quantum
information science, and develo** quantum technologies. Quantum entanglement …

The recent launch of the Micius quantum-enabled satellite heralds a major step forward for
long-range quantum communication. Using single-photon discrete-variable quantum states …

Quantum teleportation constitutes a fundamental tool for various applications in quantum
communication and computation. However, state-of-the-art continuous-variable quantum …

Distributed quantum sensing uses quantum correlations between multiple sensors to
enhance the measurement of unknown parameters beyond the limits of unentangled …

The basic idea of squeezing can be understood by considering the quantum harmonic
oscillator, familiar from undergraduate quantum mechanics. Squeezing is best visualized by …

Continuous-variable quantum key distribution (CV-QKD) provides an effective way to obtain
the high secret key rate, but is limited by practical techniques. To overcome this limitation …

The realization of quantum networks and quantum repeaters remains an outstanding
challenge in quantum communication. These rely on the entanglement of remote matter …

This review covers recent theoretical and experimental efforts to extend the application of
the continuous-variable quantum technology of light beyond" Gaussian" quantum states …

Abstract Einstein–Podolsky–Rosen (EPR) steering is a useful resource for secure quantum
information tasks. It is crucial to investigate the effect of inevitable loss and noise in quantum …

Quantum optical states are fragile and can become corrupted when passed through a lossy
communication channel. Unlike for classical signals, optical amplifiers cannot be used to …