Abstract Lithium niobate (Li Nb O 3, LN) devices play critical roles in quantum information
processing. However, for special applications like quantum key distribution (QKD), the …

Quantum key distribution (QKD) based on the fundamental laws of quantum physics can
allow the distribution of secure keys between distant users. However, imperfections in …

We report a 1.5-μm band polarization independent single photon detector based on
frequency up-conversion in periodically poled lithium niobate (PPLN) waveguides. To …

We propose a class of attacks on quantum key distribution (QKD) systems where an
eavesdropper actively engineers new loopholes by using damaging laser illumination to …

We investigate an integrated optical circuit on lithium niobate designed to implement a
teleportation-based quantum relay scheme for one-way quantum communication at a …

Quantum key distribution (QKD) enables unconditional physical layer security for the
distribution of cryptographic key material. However, most experimental demonstrations have …

Secure communications have become a requirement for virtually all kind of applications.
Currently, two distant parties can generate shared random secret keys by using public key …

It is well known that the unconditional security of quantum-key distribution (QKD) can be
guaranteed by quantum mechanics. However, practical QKD systems have some …

Quantum key distribution (QKD) has been proved to be information-theoretically secure in
theory. Unfortunately, the imperfect devices in practice compromise its security. Thus, to …

The lithium niobate on insulator (LNOI) platform has revolutionized lithium niobate materials,
and a series of quantum photonic chips have exhibited unprecedented performances …