Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …

BACKGROUND The internet has had a revolutionary impact on our world. The vision of a
quantum internet is to provide fundamentally new internet technology by enabling quantum …

In principle, quantum key distribution (QKD) offers information-theoretic security based on
the laws of physics. In practice, however, the imperfections of realistic devices might …

More than 50 years ago, John Bell proved that no theory of nature that obeys locality and
realism can reproduce all the predictions of quantum theory: in any local-realist theory, the …

Device-independent quantum key distribution (DIQKD) enables the generation of secret
keys over an untrusted channel using uncharacterized and potentially untrusted devices …

Cryptographic key exchange protocols traditionally rely on computational conjectures such
as the hardness of prime factorization to provide security against eavesdrop** attacks …

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

Bell's 1964 theorem, which states that the predictions of quantum theory cannot be
accounted for by any local theory, represents one of the most profound developments in the …

The scale-up of quantum hardware is fundamental to realize the full potential of quantum
technology. Among a plethora of hardware platforms, photonics stands out: it provides a …

Quantum networks promise to provide the infrastructure for many disruptive applications,
such as efficient long-distance quantum communication and distributed quantum …