A quantum internet is the holy grail of quantum information processing, enabling the
deployment of a broad range of quantum technologies and protocols on a global scale …

Conference key agreement (CKA), or multipartite key distribution, is a cryptographic task
where more than two parties wish to establish a common secret key. A composition of …

Twin-field quantum key distribution can overcome the secret key capacity of repeaterless
quantum key distribution via single-photon interference. However, to compensate for the …

Secure key rate (SKR) of point-point quantum key distribution (QKD) is fundamentally
bounded by the rate-loss limit. Recent breakthrough of twin-field (TF) QKD can overcome …

Quantum conference key agreement (QCKA) allows multiple users to establish a secure key
from a shared multi-partite entangled state. In a quantum network, this protocol can be …

Quantum secure direct communication (QSDC) can directly transmit secret messages
through quantum channel without keys. Device-independent (DI) QSDC guarantees the …

Quantum conference key agreement is an important cryptographic primitive for future
quantum network. Realizing this primitive requires high-brightness and robust multiphoton …

Currently most progress on quantum secret sharing suffers from rate-distance bound, and
thus the key rates are limited. In addition to the limited key rate, the technical difficulty and …

The alternative variant of measurement-device-independent quantum key distribution (MDI
QKD), called asynchronous MDI QKD or mode-pairing MDI QKD, offers similar repeaterlike …

Continuous variable quantum key distribution that can be implemented using only low-cost
and off-the-shelf components reveals great potential in practical large-scale realization …