Quantum theory has been successfully validated in numerous laboratory experiments. But
would such a theory, which effectively describes the behavior of microscopic physical …

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

Long-distance entanglement distribution is essential for both foundational tests of quantum
physics and scalable quantum networks. Owing to channel loss, however, the previously …

In the context of quantum technologies, the generation and manipulation of single photons
has become a key element for applications such as quantum communication and quantum …

Quantum key distribution (QKD) uses individual light quanta in quantum superposition states
to guarantee unconditional communication security between distant parties. However, the …

An arbitrary unknown quantum state cannot be measured precisely or replicated perfectly.
However, quantum teleportation enables unknown quantum states to be transferred reliably …

Photonic quantum technologies represent a promising platform for several applications,
ranging from long-distance communications to the simulation of complex phenomena …

Quantum communication provides an absolute security advantage, and it has been widely
developed over the past 30 years. As an important branch of quantum communication …

Concerted efforts are underway to establish an infrastructure for a global quantum Internet to
realise a spectrum of quantum technologies. This will enable more precise sensors, secure …

Owing to the inevitable loss in communication channels, the distance of entanglement
distribution is limited to approximately 100 kilometres on the ground. Quantum repeaters can …