Thirty years after it was first proposed, quantum teleportation remains one of the most
important protocols in quantum information and quantum technologies, enabling the …

Since its discovery, the quantum entanglement becomes a promising resource in quantum
communication and computation. However, the entanglement is fragile due to the presence …

Quantum secure direct communication (QSDC) attracts much attention for it can transmit
secret messages directly without sharing a key. In this article, we propose a one-step QSDC …

Device-independent quantum secure direct communication (DI-QSDC) can relax the
security assumptions about the devices' internal working, and effectively enhance QSDC's …

Entanglement is a quintessential quantum mechanical phenomenon with no classical
equivalent. First discussed by Einstein, Podolsky, and Rosen and formally introduced by …

Entanglement purification is to distill high-quality entangled states from low-quality
entangled states. It is a key step in quantum repeaters, determines the efficiency and …

Entanglement distribution via photons over long distances enables many applications,
including quantum key distribution, which provides unprecedented privacy. The inevitable …

Hyperentanglement, the simultaneous entanglement in more than one degree of freedom
(DOF), plays an important role in quantum communication and quantum information …

A leading nonlinear effect in magnonics is the interaction that splits a high-frequency
magnon into two low-frequency magnons with conserved linear momentum. Here, we report …

Entanglement purification is the distilling of high-quality entanglement from low-quality
entanglement and is a key element in the quantum repeater. As a new branch of …