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

Abstract Noisy Intermediate-Scale Quantum (NISQ) technology will be available in the near
future. Quantum computers with 50-100 qubits may be able to perform tasks which surpass …

Communication security has to evolve to a higher plane in the face of the threat from the
massive computing power of the emerging quantum computers. Quantum secure direct …

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

Superconducting circuits are a strong contender for realizing quantum computing systems
and are also successfully used to study quantum optics and hybrid quantum systems …

The security of quantum key distribution (QKD) usually relies on that the users' devices are
well characterized according to the security models made in the security proofs. In contrast …

Randomness is important for many information processing applications, including numerical
modelling and cryptography 1, 2. Device-independent quantum random-number generation …

Over the past few decades, experimental tests of Bell-type inequalities have been at the
forefront of understanding quantum mechanics and its implications. These strong bounds on …

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 …

The ability to produce random numbers that are unknown to any outside party is crucial for
many applications. Device-independent randomness generation,,–does not require trusted …