Recent years have witnessed significant progress in quantum communication and quantum
internet with the emerging quantum photonic chips, whose characteristics of scalability …

The generation, manipulation, storage, and detection of single photons play a central role in
emerging photonic quantum information technology. Individual photons serve as flying …

Device-independent quantum key distribution (DI-QKD) provides the gold standard for
secure key exchange. Not only does it allow for information-theoretic security based on …

The security of quantum key distribution (QKD) is severely threatened by discrepancies
between realistic devices and theoretical assumptions. Recently, a significant framework …

Ever since its inception, cryptography has been caught in a vicious circle: Cryptographers
keep inventing methods to hide information, and cryptanalysts break them, prompting …

Device-independent quantum key distribution (DI-QKD) is often seen as the ultimate key
exchange protocol in terms of security, as it can be performed securely with uncharacterised …

Digital payments have replaced physical banknotes in many aspects of our daily lives.
Similarly to banknotes, they should be easy to use, unique, tamper-resistant and …

The rates of several device-independent (DI) protocols, including quantum key-distribution
(QKD) and randomness expansion (RE), can be computed via an optimization of the …

We propose a fully passive linear optical quantum key distribution (QKD) source that
implements both random decoy-state and encoding choices with postselection only, thus …

Integrated photonics provides a promising platform for quantum key distribution (QKD)
system in terms of miniaturization, robustness, and scalability. Tremendous QKD works …