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20182026
most citedExperimental Twin-Field Quantum Key Distribution Over 1000 km Fiber Distance

377 citations

Showing physics.opticsShow all

6 papers · 1 filter

physics.optics2026★ 13 cited

High-Resolution Coherent DFS Over 20km Ultra-Low-Loss Anti-Resonant Hollow-Core Fiber with Live Traffic

Rajiv Boddeda, Arnaud Dupas, Haïk Mardoyan +10

We demonstrate sub-meter resolution Coherent DFS and detect acoustic oscillations using a stabilized laser on 20 km of anti-resonant HCF with <0.10 dB/km loss without impacting liv…

physics.optics2024★ 8 cited

Attosecond All-Optical Retrieval of Valley Polarization via Circular Dichroism in Transient Absorption

Wenqing Li, Xiaosong Zhu, Pengfei Lan +5

We propose a scheme for retrieving the ultrafast valley polarization (VP) dynamics in two-dimensional hexagonal materials via attosecond circular dichroism (CD) transient absorptio…

physics.optics2024★ 13 cited

Helicity-selected near-circularly polarized attosecond pulses generated from mixed He-Ne gases

Chunyang Zhai, Xiaosong Zhu, Yingbin Li +4

We present and theoretically demonstrate a method for generating helicity-selected near-circularly polarized attosecond pulses in mixed He-Ne gases using bichromatic counter-rotati…

physics.optics2024★ 2 cited

High-purity valley-polarized currents induced by bichromatic optical fields in two-dimensional materials

Wenqing Li, Xiaosong Zhu, Liang Li +4

Producing currents predominantly from a single valley, namely valley-polarized currents, at optical-cycle timescales is an important aspect of the petahertz valleytronics, yet it r…

physics.optics2022★ 8 cited

All-optical spatio-temporal metrology for isolated attosecond pulses

Lixin He, Jianchang Hu, Siqi Sun +4

Characterizing an isolated attosecond pulse (IAP) is essential for its potential applications. A complete characterization of an IAP ultimately requires the determination of its el…

physics.optics2021

Accurate Mode-Coupling Characterization of Low-Crosstalk Ring-Core Fibers using Integral Calculation based Swept-Wavelength Interferometry Measurement

Junwei Zhang, Jiangbo Zhu, Junyi Liu +8

In this paper, to accurately characterize the low inter-mode coupling of the weakly-coupled few mode fibers (FMFs), we propose a modified inter-mode coupling characterization metho…