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 …

The purpose of this tutorial paper is to present a broad overview of photon-pair generation
through the spontaneous four wave mixing (SFWM) process in optical fibers. Progress in …

Quantum secure direct communication (QSDC) is an important quantum communication
branch, which realizes the secure information transmission directly without encryption and …

Raman-scattering noise in silica has been the key obstacle toward the realisation of high
quality fiber-based photon-pair sources. Here, we experimentally demonstrate how to get …

Integrated photonics is becoming an ideal platform for generating two-photon entangled
states with high brightness, high stability, and scalability. This high brightness and high …

In measurement-device-independent quantum key distribution (MDI QKD), the setup of Bell
state measurement (BSM) usually requires that the photons sent by different users should be …

In this article, we report a compact, low-power laser diode-pumped, all-fiber polarization-
entangled photon pair source based on periodically-poled silica fiber technology. The all …

The theoretical and experimental investigation results of the generation of the polarization-
entangled photon pairs operating at visible wavelengths are reported. The generation of …

We have experimentally demonstrated a wavelength-tunable passively mode-locked all-
fiber laser at 1.5 μm wavelength by using an erbium-doped fiber amplifier, a fiber-pigtailed …

We report the generation of polarization-entangled photon pairs in the 1550 nm band by
pum** an uneven nonlinear interferometer loop with two orthogonally polarized …