Quantum key distribution (QKD) constitutes a symmetric secret key negotiation protocol
capable of maintaining information-theoretic security. Given the recent advances in QKD …

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 …

Quantum key distribution (QKD) aims to generate secure private keys shared by two remote
parties. With its security being protected by principles of quantum mechanics, some …

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 …

Future quantum networks will enable the distribution of entanglement between distant
locations and allow applications in quantum communication, quantum sensing and …

The basic principle of quantum mechanics guarantees the unconditional security of quantum
key distribution (QKD),,,–at the cost of forbidding the amplification of a quantum state. As a …

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 …

Twin-field (TF) quantum key distribution (QKD) fundamentally alters the rate-distance
relationship of QKD, offering the scaling of a single-node quantum repeater. Although recent …

Twin-field (TF) quantum key distribution (QKD) promises high key rates over long distances
to beat the rate-distance limit. Here, applying the sending-or-not-sending TF QKD protocol …

Networks of optical clocks find applications in precise navigation,, in efforts to redefine the
fundamental unit of the 'second',,–and in gravitational tests. As the frequency instability for …